Mineral Collection Images

My Mineral Collection, Miscellaneous Systematic Sulfides Page

These are my sulfides - there are a lot of them; at high temperatures, sulfur (in sulfur dioxide and hydrogen sulfide) reacts with metals.
Sulfides on Other Pages
See also my pyrites page Berzelianite, betekhtinite, bornite, chalcocite, chalcopyrite, colusite, covellite, digenite, djurleite, enargite, luzonite, mohawkite, mooihoekite, nekrasovite, renierite, stannite, sulvanite, tennantite, and tetrahedrite on are on my copper minerals page. Andorite, baumhauerite, boulangerite, bournonite, cylindrite, fizelyite, franckeite, freieslebenite, galena, geocronite, gratonite, hutchinsonite, jamesonite, jordanite, kobellite, lengenbachite, liveingite, meneghinite, owyheeite, sartorite, semseyite, sorbyite, teallite, and zinkenite on are on my lead minerals page Matraite, sphalerite, and wurtzite are on my sphalerites page. Galkhaite is on my zinc minerals page.
Sulfides Info
Systematic sulfide collections also include arsenides, antimonides, selenides, tellurides, and sulfosalts (antimony, arsenic, bismuth, selenium, tellurium, or tin with sulfur, selenium, or tellurium).
Specimens on This Page (links take you to either the first or only specimen)
acanthite, aguilarite, aikinite, alabandite, alacranite, allargentum, allemontite, alloclasite, ambrinoite, anorpiment, antimonpearceite, argyrodite, arsenopyrite (and variety danaite), aurostibite benjaminite, berthierite, bismuthinite, bonchevite, bravoite, bukovite cadmoselite, calaverite, canfieldite, carrollite, cattierite, cetineite, chabourneite, chalcostibite, cinnabar (an example of cinnabar-included calcite), cobaltite, cobaltpentlandite, corderoite, cosalite, cubanite duranusite, dyscrasite fangite, ferroselite, fettelite, freibergite galenobismutite, gersdorffite, getchellite, greenockite, gudmundite, gustavite hauchecornite, hauerite, hawleyite, hedleyite, hessite, hocartite ikunolite jeromite, joseite kawazulite, kermesite, krutovite laffittite, livingstonite, lollingite, lorandite marcasite, matildite, maucherite, mckinstryite, melonite, metastibnite, miargyrite, millerite, molybdenite (and variety rhenian molybdenite), molybdenite-3R naumannite, nickeline oregonite, orpiment, ottensite paakkonenite, pararammelsbergite, pararealgar, patrónite, pavonite, pekoite, pentlandite, perroudite, petzite, pierrotite, polybasite, polydymite, protochabourneiteproustite, pyrargyrite, pyrrhotite raguinite, rambergite, rammelsbergite, rasvumite, realgar, rheniite safflorite (and variety saflamorite), samsonite, sarabauite, schapbachite, siegenite, skutterudite, sperrylite, stephanite, sternbergite, stibnite, stromeyerite, sylvanite tetradymite, tiemannite, tochilinite, trechmannite, troilite, trogtalite, tungstenite ullmannite, uzonite vaesite, valleriite, vihorlatite, violarite wakabayashilite, wehrlite, westerveldite, wittichenite xanthoconite yushkinite

72 Rows
Acanthite A very nice thumbnail cluster of acanthite (silver sulfide) from the San Juan de Rayas Mine, Guanajuato, Mexico. Most of the tarnish on sterling silver is acanthite. Thanks to Bob Keller at the Arizona Mineral Company for the specimen and the images! Image copyrighted by the Arizona Mineral Company.	Acanthite An old miniature of acanthite from (probably the Mizpah Mine), Tonopah, Nye County, Nevada. Most older specimens of acanthite were labeled argentite (as here) - argentite now only applies to silver sulfide above 170° C. Below that point argentite pseudomorphs into acanthite. Thanks to Margaret Lidstrom's auction on eBay for the specimen!	Acanthite Another lustrous thumbnail cluster of acanthite from the Rayas Mine in Guanajuato, Mexico. Thanks to Darrell Merke's auction on eBay for the specimen and image!
Row 2
Acanthite A fascinating old 1 cm micro of acanthite coating and at least partially replacing silver from the little-known Mann Mine (Manridge), Milner Township, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada. Ex: Weber / Perloff Collection. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!	Aguilarite A good micro of black aguilarite (silver sulfoselenide) on matrix from the type locality of the San Carlos Mine, La Luz, Guanajuato, Mexico. It's isostructural with and the selenium analog of acanthite. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Aikinite Aikinite's a rare bismuth lead copper sulfide - these two micromounts of aikinite and microscopic gold on quartz come from the type locality of the Berezovsk Mines, Ekaterinberg, Urals Region, Russia. It's from the O. Ivan Lee Collection and has a Burminco label. Thanks to Thomas Bee's auction on eBay for the specimen and images!
Row 3
Aikinite Another micro of aikinite on quartz from the Berezovsk Mines. The crystal fragment here is a bit larger and more exposed. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Alabandite Alabandite is manganese II sulfide - this thumbnail of black alabandite in matrix comes from Hanshaw, Arizona. Thanks to David H. Garske's auction on eBay for the specimen!	Alacranite There's bright orange alacranite (another arsenic sulfide) needles and red realgar in a crevice across the top of this sandstone micro from Lazaresti, Harghita County, Romania. Only a few specimens were found from this locale (during the reconstruction work of the Nyirfurdo spa). Thanks to Gabor Koller's auction on eBay for the specimen and the images!
Row 4
Allargentum An excellent miniature of allargentum (silver antimonide) and antimony-rich silver from the Crown Reserve Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada. The center photo (larger image) shows a cleavage of the allargentum. It's postulated that both minerals separated on cooling from a silver-antimony mix. Thanks to Reiner Mielke's auction on eBay for the specimen and the images!	Allemontite A finely-crystallized glittery little thumbnail of allemontite from the type locality of the Les Chalanches Mine, Allemont, Isère, Rhône-Alpes, France. It's now considered to be stibarsen (SbAs) or stibarsen with either an excess of antimony or arsenic. Thanks to Emilie & Ron Kendig's auction on eBay for the specimen!	Alloclasite with Sphaerocobaltite An excellent miniature of bright pink sphaerocobaltite in vugs rimmed by silvery alloclasite (cobalt iron arsenosulfide) on matrix from Bou Azzer, Tazenakht, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco. Thanks to Micah Cline's auction on eBay for the specimen and the images!
Row 5
Ambrinoite An excellent miniature of the new (2009) mineral ambrinoite (a hydrated potassium ammonium stibioarsenide - the first of its kind) on an anhydrite matrix from the type locality of the Signols Quarry, Signols, Oulx, Val di Susa, Piedmont, Italy. It occcurs as tiny red crystals in a vug (larger image, bottom row). Thanks to Gabor Koller's auction on eBay for the specimen and the images!	Anorpiment Anorpiment (arsenic trisulfide) is the triclinic dimorph of monoclinic orpiment and it's yellowish-green instead of orange-yellow. This miniature of greenish anorpiment covering orpiment comes from the second known locality - the Getchell Mine in the Osgood Mts, Humboldt County, Nevada. It was collected by Ralph Merrill of Minerals Unlimited in 1958 and labeled as an unknown with a Mineral Zone dealer tag. ID verified at the University of Arizona. Thanks to David H. Garske's auction on eBay for the specimen!	Antimonpearceite Antimonpearceite is a silver copper antimonoarsenosulfide - it's the copper and antimony analog (forms a complete series with) of pearceite and forms an incomplete series with arsenpolybasite. This thumbnail of antimonpearceite on barite, formerly of the Joe Cilen Collection, is from the Clara Mine, near Wolfrath, Black Forest, Germany. Antimonpearceite is now called polybasite-Tac. Thanks to David H. Garske's auction on eBay for the specimen!
Row 6
Argyrodite An excellent micro of massive silvery-gray argyrodite (silver germanium sulfide) from the Santiago Alto mine, Porco, Agua de Castilla, Antonio Quijarro Province, Potosí Department, Bolivia. It forms a series with canfieldite where tin replaces the germanium. Selenium and tellurium can also replace some of the sulfur. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!	Arsenopyrite A small cabinet specimen of big, beautiful, classic arsenopyrite "tent" crystals from Santa Eulalia, Chihuahua, Mexico.	Arsenopyrite A miniature of arsenopyrite crystals on a pyrite and arsenopyrite matrix from Zacatecas, Mexico. Thanks to Dale Richards' auction on eBay for the specimen!
Row 7
Arsenopyrite Arsenopyrite shows an unusual habit (very elongated prisms) in this beautiful small cabinet piece from the Pachapaqui mining district, Peru. Thanks to Bob Hill's auction on eBay for the specimen!	Arsenopyrite An excellent miniature cluster of arsenopyrite stellate twins from the Quiruvilca District, Santiago de Chuco Province, La Libertad Department, Peru. Thanks to Joseph & Catherine Morris' PhelansFinds auction on eBay for the specimen and the image!	Arsenopyrite A single 1.8cm arsenopyrite crystal from the Huanzala Mine, Huallanca District, Dos de Mayo Province, Huanuco Department, Peru. Thanks to Val Collins' auction on eBay for the specimen and the image!
Row 8
Arsenopyrite, var. Danaite Cobaltiferous (up to 12%) arsenopyrite is called danaite - this sparkly thumbnail is from Burguillos del Cerro, Badajoz, Spain. It was part of the Erling Collection. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the image!	Aurostibite A micromount of an aggregate of pinkish-silver aurostibite (gold diantimonide) on matrix from Krásná Hora, Príbram, Bohemia, Czech Republic. Thanks to Chris Auer's (Eureka Micromounts) auction on eBay for the specimen and the image!	Benjaminite A miniature of rare benjaminite (a bismuth lead silver copper sulfide) Bolivar Mine (Porvenir), Cerro Bonete, Sud Lipez, Bolivia. Ex: Jack Streeter Collection and Burminco label. Thanks to Thomas Bee's auction on eBay for the specimen!
Row 9
Berthierite Berthierite's another iron antimony sulfide - this miniature of a massively parallel bundle of fibers is from the Herja Mine, Baia Mare, Maramures County, Romania. Thanks to David H. Garske's auction on eBay for the specimen!	Bismuthinite A very nice thumbnail cluster of bismuthinite (bismuth sulfide, "bismuth glance") crystals from Hengyang, Hunan Province, China. The top of the speciemn has weathered to (probably) bismutite, bismuth oxycarbonate. Even though it's an important bismuth ore, most U.S. bismuth is obtained as a byproduct during refining of other ores. It forms incomplete series with guanajuatite, its selenide analog and with stibniteits antimony analog. Thanks to John Sobolewski's auction on eBay for the specimen!	Bonchevite Bonchevite is a mixture of pekoite and galenobismutite. Depending on the reference book you consult, the formula can either be Pb3Bi2S6 or (Pb,Cu)3Bi11S18. This small-cabinet specimen comes from Narechen, Rhodope Mountains, Plovdiv District, Bulgaria. The silvery needles are named after Georgi Bonchev, the Bulgarian geologist. Thanks to Emil Stoyanov's auction on eBay for the specimen and the images!
Row 10
Bravoite When pyrite has enough nickel (> 8%) in it, it becomes gray in color and is called bravoite, after the Brazilian geologist, Jose J. Bravo. It's now considered to be a variety of pyrite. Thanks to Frank Yolton's auction on eBay for the specimen and the image!	Bravoite A 1 mm pyritohedral crystal of bravoite from Eifel, North Rhine-Westphalia, Germany. Thanks to Jake Slagle's Maryland Minerals auction on eBay for the specimen and image!	Bukovite A micro of dark-brassy bukovite (thallium copper iron selenide) with berzelianite from the type locality of the Bukov Mine, Rozna deposit, Vysocina Region, Moravia, Czech Republic. Thanks to Jacek & Jaroslaw Skupienski's (Geo-Trader) auction on eBay for the specimen and the images!
Row 11
Cadmoselite A capsule of black cadmoselite (cadmium selenide) grains from the type locality of the Ust' Uyok deposit, Turan District, Tucalaverva Republic, Russia. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!	Calaverite and Coloradoite A nice miniature of copper-colored calaverite (gold ditelluride) (larger image, top row) and black coloradoite (mercury telluride) (larger image, bottom row) in matrix from the North Kalguri Mine, Kalgoorlie, Western Australia. Thanks to Jay Buscio's auction on eBay for the specimen!	Canfieldite A tiny micro of matrix-free canfieldite (silver tin sulfide) from the type locality of Aullagas, Colquechaca, Chayanta Province, Potosi Department, Bolivia. Ex. Fred d'Esopo Collection. It forms a series with argyrodite where germanium replaces the tin. Tellurium can also replace some of the sulfur. Thanks to Emilie & Ron Kendig's auction on eBay for the specimen and the images!
Row 12
Carrollite A very nice thumbnail of carrollite (a cobalt copper nickel sulfide) from the Kolwezi Mine, Shaba Province, Congo. It's named after Carroll County, Maryland, its type locality. Thanks to Mike Keim at Marin Minerals for the specimen and the image!	Carrollite Here's a single carrollite crystal with marked and outdented faces from the Kamoya Mine, Shaba Province, Congo. Thanks to Alessandro Genazzani's (ItalianMinerals) auction on eBay for the specimen and the images!	Carrollite This one-inch carrollite crystal cluster on calcite with a blue-tarnished chalcopyrite is from the Kambove Mine, Shaba Province, Congo. Thanks to Don Bray's auction on eBay for the specimen and the images!
Row 13
Carrollite A shiny 1.8cm carrollite crystal nesting in an eroded 2.6cm tetrahedrite crystal on matrix from Katanga, Shaba Province, Congo. There's a few smaller carrollites snuggled in the small cabinet quartz matrix. Thanks to John Fasana's auction on eBay for the specimen and the images!	Cattierite A vein of silvery cattierite (cobalt disulfide) runs vertically through this (probably cobaltite) miniature from Nord Mine, Finnshytteberg ore field, Värmland, Sweden. Cattierite forms two complete series; one with pyrite, its iron analog, and one with vaesite, its nickel analog. Thanks to Steve & Susan Bringe's (Summit Minerals) auction on eBay for the specimen and the image!	Cetineite A beautiful micro of orange-red cetineite (a hydrated potassium sodium hydroxyoxysulfide) fibers lining a microvug (larger image, right) from the type locality of Le Cetine Mine, Chiusdino, Siena Province, Tuscany, Italy. It's the potassium-dominant analog of ottensite. Synthetic large-crystal cetineites (oxoselenoantimonates) have a zeolite-like channel (nanoporous) structure and are semiconducting and photoconductive (dependent upon the gas / liquid molecules in the channel). Thanks to Paolo Bracci's auction on eBay for the specimen and the image!
Row 14
Chabourneite A large micro of silvery chabourneite (a thallium lead sulfosalt) grains on matrix from the type locality of Jas Roux, Hautes-Alpes, Provence-Alpes-Cote d'Azur, France. It's the antimony-dominant analogue of dalnegroite. A 2013 study showed that chabourneite's composition can lie anywhere between lead-rich and lead-free. Thanks to Kristen Burgess' auction on eBay for the specimen!	Chalcostibite Chalcostibite's one of twenty (or so) ferroelectric ore minerals, a property which aids in the exploration for new ore deposits. It's copper antimony sulfide (almost twice as much antimony as copper) that weathers from its steel-gray color to coatings of azurite and malachite, as in this specimen from Coar-el-Harz, Morocco. It also forms an incomplete series witrh emplectite, its bismuth analog and is also called wolfsbergite, after the type locality in Germany. Thanks to Alessandro Genazzani's (ItalianMinerals) auction on eBay for the specimen!	Cinnabar Bright red cinnabar dusted with microscopic pyrite from the Nikitovka Deposit, Gorlovka, Ukraine. There's also some small quartz crystals. Thanks to Dave Hayward at Lucky Strike Minerals for the specimen!
Row 15
Cinnabar A lightly frosted, twinned cinnabar cluster from China obtained through the The Virtual Show during the 2000 Tucson Show.	Cinnabar This micromount has cinnabar and pyrite on siderite and comes from Giftberg, Bohemia, Czechoslovakia. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Cinnabar More cinnabar on dolomite from the Hunan Province in China - this miniature has a rock crystal pointer to two big beautiful twinned crystals. Thanks to Walter Mroch's (The Gem and Mineral Exploration Company) auction for the specimen and the images!
Row 16
Cinnabar A micromount of cinnabar with cuprite on dolomite from the Vogelhalt Mine, Schwarzleo, Leogang, Salzburg, Austria. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Cinnabar A pretty little thumbnail of cinnabar with a quartz cluster from the Nikitovka Deposit, Gorlovka, Ukraine. Thanks to Dave Hayward at Lucky Strike Minerals for the specimen!	Cinnabar Massive cinnabar in matrix from (probably the) San Bartolo Mine, Charcas, Mexico. This small cabinet piece has beautiful color! Thanks to Bill Awald's auction on eBay for the specimen!
Row 17
Cinnabar A large cinnabar crystal on dolomite thumbnail from China. Thanks to Chee Kiang Goh's auction on eBay for the specimen!	Cinnabar Sparkly cinnabar crystals on matrix miniature from the Almaden (mercury) Mine, Almaden, Ciudad Real, Spain. Thanks to Jesus Claramunt's auction on eBay for the specimen and the images!	Cinnabar A pretty miniature of cinnabar with hematite and calcite from Erzberg, Styria, Austria. It has a Schortmann's MInerals tag. Thanks to Val Collins' auction on eBay for the specimen!
Row 18
Cinnabar on Stibnite A beautiful thumbnail of gemmy cinnabar crystals on stibnite from the Nikitovka Deposit, Gorlovka, Ukraine - it has a Trafford|Flynn tag. Thanks to Marvin Schwalb's auction on eBay for the specimen and the image!	Cobaltite This is an excellent (and rare!) thumbnail of cobaltite (a cobalt arsenosulfide) on gray dolomite from the Elizabeth Lake area (Foster Township) near Espanola, Sudbury District, Ontario, Canada. The closeup shows the sharp casts of other cobaltites on the one cube face. Thanks to Darrel Merke's auction on eBay for the specimen! Thanks also to Reiner Mielke for the locale update!	Cobaltite A sharp 5mm cobaltite crystal in massive cobaltite from thr Marrgruvan Mine, Håkansboda, Sweden. Ex: DeVito and Cisneros collections. Thanks to Justin Zzyzx's (ZzyzxMinerals) auction on eBay for the specimen and the images!
Row 19
Cobaltite A thumbnail of cobaltite crystals in matrix from the famous Blackbird Mine, Brown Bear Adit, Lemhi County, Idaho. Thanks to John Landmesser's auction on eBay for the specimen and the images!	Cobaltpentlandite An excellent micro of bronzy cobaltpentlandite (a cobalt sulfide) with darker pyrrhotite from the type locality of the Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region, Finland. It forms a series with pentlandite, its iron-nickel analog. Some analyses show iron and nickel in cobaltpentlandite as well - it's unknown if "purely cobalt" cobaltpentlandite exists in nature. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Coloradoite A rich miniature of black coloradoite (mercury telluride) crystals in matrix with green tlapallite crusts (larger image, bottom right) from the Bambollita Mine, Moctezuma, Sonora, Mexico. Both the coloradoite and tlapallite are EDS-confirmed. The Bambollita mine is the type locality for tlapallite. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!
Row 20
Corderoite An excellent thumbnail of corderoite (mercury chlorosulfide) from the type locality of the Cordero Mine, Humbodlt County, Nevada. It forms a series with lavrentievite where bromine replaces some of the chlorine - if the bromine predominates, the mineral becomes arzakite. Corderoite is photosensitive so it should be kept in the dark. Thanks to John Sobolewski's auction on eBay for the specimen and the image!	Cosalite An esthetic miniature of cosalite (a bismuth lead sulfide) from the Cariboo Gold Quartz Mine, Wells, British Columbia, Canada. The closeup shows some gold amongst the radial acicular cosalite. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Cubanite Cubanite is an iron copper sulfide named after its type locality of Cuba. This twin (the chevrons line up with the reentrant notch on top) is from the Henderson #2 Mine, Chibougamau, Quebec, Canada. Thanks to John Veevaert at Trinity Minerals for the specimen and the image!
Row 21
Cubanite Cubanite crystals on matrix comprise this miniature also from the Henderson #2 Mine - most cubanite specimens are without matrix. Thanks to Mike Keim at Marin Minerals for the specimen and the image!	Duranusite They're hard to see but there are tiny silvery metallic grains of duranusite (an arsenic subsulfide) in among the realgar and orpiment in this miniature from the type locality of Duranus, Alpes Maritimes, France. Thanks to Thomas Bee's auction on eBay for the specimen and the image!	Dyscrasite A cute miniature of two dark-gray but sparkly dyscrasite (silver antimonide) clusters on matrix from the 1980 find at the type locality of the Wenzel Mine in the Black Forest of Germany. It forms an incomplete series with Allargentum, a variable silver-antimony "alloy". This specimen has been analyzed and found to contain 6% sulfur. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 22
Fangite A beautiful (see the larger image!) thumbnail of orange fangite (thallium sulfarsenate) and related minerals on altered lorándite (thallium sulfarsenite) from Allchar, Roszdan, Republic of Macedonia. Thanks to Gabor Koller's auction on eBay for the specimen and the images!	Ferroselite A rich micro of massive ferroselite (ferrous diselenide) from Hanksville, Wayne County, Utah. Ex: Mineral Zone (10/2009) and W. & A. Cook Collection 8/16/2007. It's the orthorhombic dimorph of isometric dzharkenite. The two ferrous diselenides may be useful in binding 79Se occuring in radioactive waste. Ferroselite may also be useful as lithium-ion battery electrodes. Thanks to David H. Garske's auction on eBay for the specimen and the image!	Fettelite A nice miniature of a fettelite (a mostly silver arsenosulfide) rosette on matrix from Glasberg Quarry, Nieder-Berbach, Hesse, Germany. It is redder than the pictures show it to be. Fettelite also contains mercury, antimony, copper, thallium, and iron. Thanks to Luca De Battisti's auction on eBay for the specimen and the image!
Row 23
Freibergite A handsome small cabinet specimen of silvery-black freibergite (a silver copper iron sulfosalt) with azurite in a quartz-andesite breccia from (probably) the Cerro Colorado Mine, Pima County, Arizona. It forms two series; one with argentotennantite and one with tetrahedrite. Thanks to Roger McCaslin's auction on eBay for the specimen and the image!	Galenobismutite Some specimens I collect just because they're fascinating - this is one of them. There's fibrous galenobismutite (bismuth lead sulfide) snuggled in among the quartz (closeup, row2, right) and included in the fluorites (closeup, row2, left). A couple of the fluorites are totally colorless and transparent, though they all fluoresce bluish-purple under longwave UV. Most of the fibers are thinner than a human hair - some are much thinner (and still elastic)! There's also some arsenopyrite crystals (closeup, row3, left) and (closeup, row3, right). This small cabinet piece is from the Yaogangxian Mine in Yizhang, China. Thanks to Dave Hayward at Lucky Strike Minerals for the specimen and the image! Thanks also to Rob Woodside for the arsenopyrite identification!	Galenobismutite Here's a thumbnail of galenobismutite on matrix from Gladhammar, Vastervik, Småland, Sweden. Thanks to Jon Gladwell's (Myrddin Emrys Limited) auction on eBay for the specimen and image!
Row 24
Gersdorffite A single gersdorffite (nickel arsenosulfide) octahedron from Dobschav, Czechoslovakia. It forms an incomplete series with jolliffeite, its arsenoselenide analog. Ex. James L. Moyer collection. Thanks to Mike Keim at Marin Minerals for the specimen and the images!	Getchellite When antimony replaces half of the arsenic in orpiment it becomes getchellite. Bright vermilion crystals of getchellite (arsenic antimony sulfide) wander through the matrix of this miniature from Humboldt County in Nevada. It may be type locality material! Thanks to Wright's Rock Shop's table at the Carnegie Gem & Mineral Show for the specimen!	Getchellite A bright miniature of getchellite and orpiment from the type locality - the Getchell Mine, Humboldt County, Nevada. Thanks to Anthony Jones for the specimen!
Row 25
Greenockite This is a cabinet specimen of greenockite (cadmium sulfide, the only true cadmium ore - most of the cadmium for industry is derived from other heavy metal ore refining) from the White River area in Rush, Marion County, Arkansas. The crystals occur as tiny clusters and stacked aggregates all over the matrix. Hexagonal greenockite is dimorphous with isometric hawleyite. Thanks to Eric Greene's (Treasure Mountain Mining) auction on eBay for the specimen and the image!	Gudmundite Gudmundite is the antimony analog (FeSbS) of arsenopyrite. This micromount comes from the Pezinok Mine, Bratislava, Slovak Republic. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Gudmundite A miniature of charcoal-gray gudmundite in matrix from the Lac Nicolet antimony mine, South Ham, Wolfe County, Quebec, Canada.
Row 26
Gustavite Dark gray laths of gustavite, a bismuth lead silver sulfosalt, with brassy chalcopyrite in matrix from the Rotgülden arsenic mine at Salzburg, Austria. It forms a series with lillianite where lead replaces the silver and some of the bismuth. Thanks to Chris Auer's (Eureka Micromounts) auction on eBay for the specimen and the image!	Hauchecornite A small miniature of brassy hauchecornite (a nickel bismuth antimony sulfosalt) crystals in matrix from the Vermilion Mine, Denison Township, Sudbury, Ontario, Canada. It has a MIneral Zone dealer tag. Thanks to David H. Garske's auction on eBay for the specimen!	Hauerite A little hauerite (manganese IV sulfide) crystal from the Jeziorko (sulfur) Mine, Tarnobrzeg, Podkarpackie, Poland. It's an octahedron modified by a cube. Thanks to Robert Vano's auction on eBay for the specimen and the images!
Row 27
Hawleyite A small miniature of a bright-yellow hawleyite (cadmium sukfide) coating on matrix from the Hanover-Ferro District, Grant County, New Mexico. Isometric hawleyite is dimorphous with hexagonal greenockite. Thanks to Kevin Boulter's auction on eBay for the specimen and the images!	Hedleyite A large micro of silvery hedleyite (a bismuth telluride) on matrix from the type locality of the Good Hope Mine, Hedley, Osoyoos Mining Division, British Columbia, Canada. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!	Hessite A rich miniature of gray hessite (a silver telluride) on matrix with yellow keystoneite from the McAlpine Mine, Coulterville District, Tuolumne County, California. Thanks to Micah Cline's auction on eBay for the specimen and the images!
Row 28
Hocartite A capsule of dark-gray metallic hocartite (a silver tin iron sulfide) from the Pirquitas (tin-silver) Mine, Rinconada Dept, JuJuy, Argentina. ID by Gunnar Farber. It forms a series with pirquitasite, where zinc replaces the iron. Thanks to Lester Burgess' auction on eBay for the specimen!	Ikunolite A beautiful micro of ikunolite (a bismuth selenosulfide) on quartz from the Alsó-Rózsa Mine, Nagybörzsöny, Börzsöny Mountains, Pest County, Hungary. Thanks to Gabor Koller's auction on eBay for the specimen and the images!	Jeromite A beautiful thumbnail of jeromite (an arsenic selenosulfide) on quartz from the type locality of the Kami Mine, Ayopaya Province, Cochabamba Department, Bolivia. This is the type locality for the first jeromite NOT formed by a mine fire. Thanks to Justin Zzyzx's (ZzyzxMinerals) auction on eBay for the specimen and the images!
Row 29
Joséite A thumbnail of dark-gray sparkly joséite (bismuth tellurosulfide) in matrix from Glacier Gulch, Smithers, British Columbia, Canada. Thanks to Jon Gladwell's (Myrddin Emrys Limited) auction on eBay for the specimen!	Kawazulite A micro of silvery kawazulite (a bismuth sulfoselenotelluride) and gold from Jílové, Central Bohemia Region, Bohemia, Czech Republic. Thanks to Dieter Obrecht's The NetMine auction on eBay for the specimen and the images!	Kermesite A small miniature cluster of kermesite (antimony oxysulfide) from near Jianshui, Yunnan Province, China. Kermesite is the intermediate between stibnite and stibiconite (fully oxidized stibnite). The larger image shows the red translucency of the backlit cluster. Thanks to Rob Lavinsky at The Arkenstone for the specimen and the images!
Row 30
Kermesite An excellent miniature of 2cm-long kermesite fibers from the type locality (according to some sources) of the Pezinok Mine in Slovakia. Thanks to Chris Auer's (Eureka Micromounts) auction on eBay for the specimen!	Krutovite An excellent miniature of silvery krutovite (nickel arsenide) being replaced by green nickel silicates (mostly falcondoite) from the Teliatko asbestos quarry, Dobsina, Roznava County, Kosice Region, Slovakia. The krutovite was confirmed by PXRD and EMPA-WDS. Acquired from Martin Stevko. Thanks to Peter Zitnan's auction on eBay for the specimen and the images!	Laffittite Scarlet microneedles (larger image, top right) of laffittite (a silver-mercury arsenosulfide or a silver mercury sulfosalt) from the Getchell Mine, Humboldt County, Nevada. The larger image also shows a second thumbnail from the same locale. Thanks to Anthony Jones' auction on eBay for the specimens!
Row 31
Livingstonite A miniature of massive livingstonite (a mercury antimony sulfide) from the Khaydarkan mercury mine, 70km S of Fergana, Kyrgyzstan (Russia). Thanks to the Fersman Mineralogical Institute's table at the 2003 Carnegie Gem & Mineral Show for the specimen!	Livingstonite A very good miniature of livingstonite on matrix from the type locality of Huitzuco de los Figueroa, Mun. de Huitzuco, Guerrero, Mexico. Ex: John R. Ydren Collection #1505. Thanks to Stephen Hernly's auction on eBay for the specimen and the images!	Löllingite An old miniature of silvery löllingite (iron arsenide, the arsenic analog of pyrite) with unusual black willemite crystals on matrix from the Sterling Mine, Ogdensburg, New Jersey. It forms a series with safflorite, its cobalt analog and can also contain considerable amounts of nickel (forming a series with rammelsbergite). Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 32
Löllingite A large miniature of löllingite in matrix from the Cobalt area in the Timiskaming District, Ontario, Canada. Thanks to Darrel Merke's (Proton Minerals) auction on eBay for the specimen and the images!	Lorandite Bright-orange crystals of lorandite (thallium arsenic sulfide) on matrix comprise this large thumbnail from Xingyi County, Qianxi'nan Autonomous Prefecture, Guizhou Province, China. It's the arsenic analog of weissbergite. The large deposit of lorandite at Allchar (Macedonia) was used (2008 - 2010) as a solar neutrino detector - a thallium atom, when hit by a neutrino, undergoes a 205Tl(v, e-)205Pb capture reaction and then the lead atoms are counted. Thanks to Kasper von Wuthenau's auction on eBay for the specimen!	Marcasite A matrix-free thumbnail of marcasite and pyrite (both iron disulfide but differing crystal systems) from the Onyx Ace Hill Quarry, nr Plattsmouth, Cass County, Nebraska. It has a Hamel Mining & Minerals (Los Angeles) tag. Marcasite is softer and less stable than pyrite, consequently, all "marcasite" jewelry is made from pyrite. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 33
Marcasite A micro of brassy marcasite and dark chalcopyrite from the Cattlegrid Pit, Mount Gunson, South Australia, Australia. Ex: Carlos Cassinelli Collection #033, 24 Jul 1983. My camera didn't pick up the marcasite that well. Thanks to Paolo Bracci's auction on eBay for the specimen!	Matildite This matildite miniature (a silver-bismuth sulfide) goes by many other names: perulusite, peruvite, morocchite, and is from the type locality - the Matilda Mine, in the Morococha District, Yauli Province, Junin Department, Peru. It forms incomplete series with bohdanowiczite and volynskite, its selenide and telluride analogs respectively. Trigonal matildite is dimorphic with cubic schapbachite. Thanks to Irving Roth's (Roth International, Inc.) auction on eBay for the specimen!	Maucherite in Skutterudite An excellent contrasty thumbnail of dark-gray submillimeter maucherite (a nickel arsenide) crystal clusters in vugs in silvery-gray massive skutterudite and some safflorite from the Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada. Thanks to Reiner Mielke's auction on eBay for the specimen and the images!
Row 34
Maucherite An excellent large micro of millimeter-sized maucherite crystals covering matrix from the type locality of Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!	Mckinstryite A micro of steel-gray mckinstryite (a silver copper sulfide) on matrix from the Alexander Mine, Vrancice, Pribram, Central Bohemia Region, Bohemia, Czech Republic. Thanks to Paolo Bracci's auction on eBay for the specimen!	Melonite Grains of silvery-gray melonite (nickel telluride) are disseminated throughout the drusy quartz matrix of this thumbnail from the type locality of the Melones Mine, Carson Hill, Calaveras County, California. It forms a series with merenskyite, where palladium (and often platinum) replaces the nickel. Thanks to Thomas Bee's auction on eBay for the specimen!
Row 35
Metastibnite Beautiful vermilion amorphous metastibnite (the dimorph of stibnite) on a fragile fumarolitic matrix from the type locality of Steamboat Springs, Washoe County, Nevada. Thanks to Jon Gladwell's (Myrddin Emrys Limited) auction on eBay for the specimen!	Miargyrite A nice miniature of miargyrite (a silver antimony sulfide) clusters in matrix from the Hecla Rosebud Mine, Pershing County, Nevada. It has a Geoprime Minerals label. Miargyrite is trimorphous with cuboargyrite and baumstarkite, though some authorities treat these as separate minerals. It's also similar in composition to pyrargyrite, but the silver content is about half (36%). Thanks to Alexander Falster's auction on eBay for the specimen!	Millerite When found in sufficient quantites, millerite can be an important ore of nickel (65%). The specimens, like this miniature from the Thompson Open Pit Mine, Thompson, Manitoba, Canada, are known for their lush moss-like coatings of millerite. Thanks to Greg Holland at the Stone Haven Mineral Shoppe for the specimen and the image!
Row 36
Millerite and Violarite Sprays of millerite and violarite on a miniature matrix from the Goldstrike Mine, Post Pit, Eureka County, Nevada. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Millerite Very fine millerite hairs in a half geode thumbnail from Hall's Gap, Lincoln County, Kentucky. Thanks to Melvane Scott's auction on eBay for the specimen!	Millerite Almost all millerite occurs in an acicular habit. Here, in this pretty miniature from the Orford Nickel Mine, Sherbrooke County, Québec, Canada, the millerites are brassy tabular crystals on green grossular on a calcite matrix. Thanks to Val Collins' auction on eBay for the specimen and the image!
Row 37
Millerite An excellent miniature of the Sudbury habit of millerite - massive cleavages - instead of the much more common needles. It typically occurs here with chalcopyrite. Thanks to Darrel Merke's (Proton Minerals) auction on eBay for the specimen and the images!	Millerite Tiny radial sprays of millerite on quartz comprise this micro from the Wallace Stone Quarry, Bayport, Huron County, Michigan. The FOV in the extreme closeup (larger image, right) is 9mm. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!	Millerite An odd miniature of flat sprays of millerite on chert from Lincoln Creek, Missouri. Ex: Mineral Zone (8/2010) and Carl Richardson (died 4/1/1988). Thanks to David H. Garske's auction on eBay for the specimen!
Row 38
Molybdenite A molybdenite (molybdenum sulfide) fan on quartz from North Queensland, Australia. Molybdenite is the major ore of molybdenum and purified molybdenum sulfide is a dry lubricant. Thanks to Chris Korpi at Pangaea Minerals for the specimen!	Molybdenite with Epidote Compacted molybdenite crystals with epidote comprise this old miniature from the famous Getchell Mine in Humboldt County, Nevada. Thanks to Wayne Bloechl's (GeoJoe's) auction on eBay for the specimen!	Molybdenite and Pyrite Sprays of molybdenite on (and massive pyrite in) a quartz vein comprise this small cabinet specimen from northern California. Thanks to Wayne Bloechl's (GeoJoe's) auction on eBay for the specimen!
Row 39
Molybdenite A beautiful thumbnail of stacked moly crystals on quartz from the famous Moly Hill Mine, Malartic, Abitibi County, Quebec, Canada. Thanks to C. Carter Rich's table at the 2001 Carnegie Gem & Mineral Show for the specimen! Thanks also to Gilles Poulin for the locale update!	Molybdenite Very nice chunks of massive molybdenite in milky quartz from Sonora, Mexico. The small cabinet specimen has a RedCliffe Minerals label. Thanks to Wayne Rudolph's auction on eBay for the specimen!	Molybdenite Molybdenite often occurs as compacted and disseminated crystals in quartz as in these three miniatures from the Ojuela Mine, Mapimi, Durango, Mexico. Thanks to Juan Angel Tort-Figueroa of Torreon, Mexico, for the specimens!
Row 40
Molybdenite A beautiful moly crystal thumbnail also from Moly Hill, Quebec, Canada. Thanks to C. Carter Rich's table at the 2002 Carnegie Gem & Mineral Show for the specimen!	Molybdenite A museum-size piece of moly crystals in serpentine with calcite from the old Royal Green Marble quarry, Phillipsburg, Warren County, New Jersey. Ex: Alex Knoll Collection, 5/62. Thanks to Stuart Schneider's auction on eBay for the specimen!	Molybdenite A beautiful cluster of moly stacks on quartz (miniature) from the Dalen molybdenium and copper mines, Dalen, Tokke, Telemark, Norway. Thanks to Jonas Bredberg's auction on eBay for the specimen and the images!
Row 41
Molybdenite-3R A miniature of the very rare 3R polytype of molybdenite on matrix from the Poudrette Quarry, Mont St. Hilaire, Québec, Canada. The 2H polytype is much more common. It has a Roger's Minerals, (Val Caron, Ontario) tag. Thanks to Kristen Burgess' auction on eBay for the specimen!	Molybdenite, var. Rhenian Molybdenite A miniature of rhenium-bearing molybdenum in matrix from the Childs‑Adwinkle Mine, Copper Creek, Copper Creek, Bunker Hill District, Galiuro Mts, Pinal County, Arizona. The molybdenite from here contains 320 to 580 ppm rhenium - among the highest known. Ex: Vince Vozza Collection. Thanks to Michael Shannon's Shannon & Sons Minerals auction on eBay for the specimen and images!	Naumannite A good micro dark-gray naumannite (silver selenide) on matrix from Zalesi, Javornik, Olomouc Region, Moravia, Czech Republic. Thanks to Alexandr Martaus' auction on eBay for the specimen!
Row 42
Nickeline Nickeline (or niccolite) is nickel monoarsenide. The front surface of this small cabinet piece has been cut and polished - around the sides is a light green coating of annabergite, a nickel arsenate named after Annaberg in Saxony, Germany. The annabergite is a weathering product of the nickeline. It's from the Copper Pass Deposit at Great Slave Lake, Northwest Territories, Canada. Thanks to Amethyst Galleries, Inc. for the specimen and the image! Image copyrighted by Amethyst Galleries, Inc.	Nickeline A small cabinet specimen of tarnished nickeline and other sulfides on matrix from somewhere in Huelva, Andalusia, Spain. Thanks to Jason Matthiessen' sauction on eBay for the specimen and the images! -	Nickeline A bright miniature of untarnished nickeline (and probably breithauptite, its antimonide analog) from Cobalt, Timiskaming District, Ontario, Canada. Thanks to Sue Silver's auction on eBay for the specimen and the image!
Row 43
Oregonite Oregonite's an iron nickel arsenide - this waterworn pebble comes from the type locality, Josephine Creek, west of Kirby, Josephine County, Oregon. Thanks to Dan Weinrich at Dan & Jill Weinrich for the specimen!	Orpiment A small cabinet of beautiful long prisms of orpiment (arsenic trisulfide) from the Shimen Realgar Mine, Shimen County, Hunan Province, China - the golden color is really intense when the light hits them right!	Orpiment A beautiful thumbnail cluster of orpiment crystals from the famous Twin Creeks Mine near Winnemucca, Humboldt County, Nevada. Thanks to H M & D Minerals' table at the 2002 Carnegie Gem & Mineral Show for the specimen!
Row 44
Orpiment Bright red botryoidal orpiment comprises this miniature from the El' Brusskiy Mine, North Caucasus, Russia. The closeup (larger image, bottom row, right) shows a thin layer of probable stibnite. Thanks to Wright's Rock Shop's table at the 2002 Carnegie Gem & Mineral Show for the specimen!	Orpiment A gorgeous large thumbnail of orpiment from the Quiruvilca Mine, Santiago de Chuco Province, La Libertad Department, Peru. Thanks to Brian Kosnar's (Mineral Classics) auction on eBay for the specimen and the images!	Ottensite Brilliant red submillimeter spheroidal crusts of ottensite (a hydrated antimony sodium potassium oxysulfide) and a stibnite cluster on matrix comprise this miniature from the type locality of the Qinglong Mine, Dachang Sb ore field, Qinglong County, Qianxi'nan Autonomous Prefecture, Guizhou Province, China. It's the sodium-dominant analog of cetineite. Thanks to Aixin Li's auction on eBay for the specimen and the images!
Row 45
Paakkonenite A large micro of tiny dark-gray paakkonenite (an antimony sulfarsenide) covering matrix from the kermesite occurence near the town of Dafeng, Shanglin County, Nanning Prefecture, China. Thanks to Jianhong Zhang's auction on eBay for the specimen and the images!	Pararammelsbergite A fascinating, heavy, small cabinet specimen of pararammelsbergite (nickel diarsenide), skutterudite, and cobaltite in chert, probably from the type locality of the Canadian Keeley Mine, South Lorrain Twp, Timiskaming County, Ontario, Canada. One face has been sawn and polished to show the dendritic structure of the arsenides along with their weathering products, pink erythrite and green annabergite. The pararammelsbergite appears as elongated rectangles oriented (predominately) northwest-southeast (larger image , right). There also appears to be some wire silver. This specimen appears to be very similar to the one used for the structure re-analysis done in The Crystal Structure of Pararammelsbergite (NiAs2) in which the author also determined that the space group is Pbca instead of the more commonly reported Pbma. Ex: John L. Baum Collection. Pararammelsbergite is the (orthorhombic) low-temperature (590° C) polymorph of (orthorhombic) rammelsbergite and also a polymorph of cubic krutovite. Thanks to John Cianciulli's auction on eBay for the specimen!	Pararealgar A thumbnail of yellow pararealgar and black baumhauerite from the new (2003) and first (for the Franklin-Sterling Hill area) find at the Passaic Pit, Sterling Mine, Ogdensburg, New Jersey. Ex: Rumrill Collection. Thanks to John Cianciulli's auction on eBay for the specimen!
Row 46
Patrónite It may not look like much, but this chunk of drusy on massive patrónite (vanadium sulfide, also called rizopatrónite) is the main ore of vanadium. Different references give different formulas for patrónite; VS4, V2S5, or a mixed sulfide. It's named after Antenor Rizo Patrón, a Peruvian engineer. This thumbnail is from the type locality of the Ragra Mine, Junín, Cerro de Pasco, Pasco Department, Peru. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Pavonite A miniature of tiny dark-gray pavonite (a silver sulfbismuthite) crystals with pale-yellow barite from somewhere in Colorfado - it's from an old estate collection. Thanks to Jonathan Green's auction on eBay for the specimen!	Pekoite Pekoite is a lead copper bismuth sulfoselenide - there's far more bismuth than either lead or copper so I've included it here. This piece is from the Falu Mine, Falun, Dalarna, Sweden. Thanks to Dan Weinrich at Dan & Jill Weinrich for the specimen and the image!
Row 47
Pentlandite in Calcite This miniature of pentlandite-included calcite comes from the Ropes Gold Mine, near Ishpeming, Marquette County, Michigan. The extreme closeup (larger image, bottom) shows a pentlandite on top of the calcite. Pentlandite, an iron-nickel sulfide, forms a series with cobaltpentlandite, where cobalt can replace both the iron and nickel. Thanks to Mike Basal's (From My Collection To Yours) auction on eBay for the specimen!	Perroudite Perroudite's an odd and extremely rare mercury silver halogensulfide - it occurs here as tiny red needles on matrix. I don't know what the green mineral, but the micro is from the type locality of the Cap Garonne Mine, Côte d'Azur, Pradet, France. It forms an incomplete series with capgaronnite. Thanks to Chris Auer's (Eureka Micromounts) auction on eBay for the specimen and the image!	Petzite A thumbnail of petzite (a silver-gold telluride) crystals from the Cornucopia Mine (closed in 1941), 15 miles N of Halfway, Baker County, Oregon. Thanks to Jon Gladwell's (Myrddin Emrys Limited) auction on eBay for the specimen!
Row 48
Pierrotite One of the few thallium-containing minerals, pierrotite (a thallium sulfosalt) occurs as grayish-black masses in this miniature from the type locality of Jas Roux, Hautes Alps, Côte d'Azur, France. Some references consider it to be dimorphous with parapierrotite. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!	Polybasite This thumbnail of polybasite, a silver antimony sulfide with about 12% copper, is from the Las Chispas Mine, Sonora, Mexico. It can be an ore of silver if available in large enough deposits. Polybasite's also one end of a series with pearceite, a silver arsenic sulfide - most specimens are somewhere in between. Thanks to Margaret's (Lidco) auction on eBay for the specimen!	Polydymite Polydymite, a nickel (II,III) sulfide, occurs here as violet-gray lustrous crystals on a miniature matrix from Kipushi, Shaba, Republic of the Congo. It forms two series - one with linnaeite, its cobalt (II,III) analog and one with violarite, it's iron (II) analog. Siegenite is a possible midmember of the series. Thanks to Thomas Bee's auction on eBay for the specimen and the image!
Row 49
Polydymite A large thumbnail of black polydymite stringers in calcite from Gray's Quarry, Hamilton, Hancock County, Illinois. It's a member of the thiospinel group. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the images!	Protochabournéite An excellent micro of black protochabournéite (a thallium lead sulfosalt) from the type and only locality of the Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Proustite A miniature of two small reddish-silver proustite (a silver arsenic sulfide) crystals (see closeup) with galena in dolomite from the famous Lengenbach Quarry, Binntal, Valais, Switzerland. It's dimorphous with xanthoconite and forms a series with pyrargyrite. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the image!
Row 50
Proustite A few tiny bright red proustite crystals highlight this miniature from the relatively new (for proustite) locale of the Imiter Mine in Morocco. Thanks to Keith Hayes' (KQ's Minerals) auction on eBay for the specimen!	Proustite A wonderful old (1920s - see the antique German label, larger image, bottom) miniature with one bright! red proustite crystal from (probably) the Dolores I Mine, Chañarcillo, Atacáma Province, Chile. Thanks to Steve & Susan Bringe's (Summit Minerals) auction on eBay for the specimen!	Proustite A beautiful single proustite crystal (larger image, right) from Schlema, Schlema-Hartenstein District, Erzgebirge, Saxony, Germany. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!
Row 51
Pyragyrite One of the two "ruby-silver" ores (the other is proustite), pyrargyrite (a silver antimony sulfide) is a marker for silver and is often used as a silver ore (60% silver). The large crystal has an iridescent tarnish but the millimeter-sized ones are a beautiful, almost transparent ruby red. This miniature is from the Uchucchacua Mine, Oyon Province, Lima Department, Peru. It's dimorphous with pyrostilpnite and forms a series with proustite. Thanks to Chris Korpi at Pangaea Minerals for the specimen!	Pyrargyrite Clusters of pyrargyrite comprise this miniature from the famous Hecla Rosebud Mine, Pershing County. Nevada. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the image!	Pyrrhotite Pyrrhotite's the other iron sulfide - also, the sulfur content is variable. This miniature, on quartz with calcite is from Dal'negorsk, Primorskiy Kray, Russia. Thanks to Tom Hales' (Museum Minerals) auction on eBay for the specimen and the image!
Row 52
Pyrrhotite More pyrrhotite - this time as the matrix. There's a galena crystal, some sphalerites, and some quartz. Thanks to Martha Crawford's auction on eBay for the specimen!	Pyrrhotite There are at least five "Potosi Mines" in Mexico - this thumbnail floater of pyrrhotite crystals comes from one of the two in Chihuahua. Thanks to Kristen Burgess' auction on eBay for the specimen!	Raguinite A few tiny black grains of raguinite (thallium iron sulfide) decorate this micro of realgar from the type locality of Allchar, Roszdan, Macedonia. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!
Row 53
Rambergite Rambergite's the hexagonal dimorph of cubic alabandite - this small thumbnail of tiny brown rambergite crystals in microvugs (larger image, center) is from the type locality of Garpenberg-Norra, Dalarna, Sweden. There's also an unidentified metallic mineral present (larger image, bottom). Thanks to Ingo Drescher's auction on eBay for the specimen!	Rammelsbergite Rammelsbergite is the other relatively common nickel arsenide, a diarsenide. There are other, much rarer nickel arsenides; dienerite, maucherite, and orcelite - all subarsenides. It's also trimorphic with pararammelsbergite and krutovite. This massive thumbnail comes from Schneckenstein, Klingenthal, Vogtland, Saxony, Germany, near the type locality of Schneeburg in the Harz Mountains. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen!	Rasvumite A micro of rasvumite fibrous aggregates (iron potassium sulfide) with an orange unidentified iron sulfide alteration coating (larger image, center and right) on an aegirine matrix from the type locality of Rasvumtchorr Mt, Khibiny Massif, Kola Peninsula, Murmanskaja, Russia. Thanks to Csanad Loranth's auction on eBay for the specimen and the images!
Row 54
Realgar Collected in the 1940's from the finest locality (probably the Royal Reward Mine), King County, Washington) in North America (no wonder it's been worked out for years), this specimen has transparent red crystals of realgar on massive realgar. Thanks to Olympic Mountain Gems, Inc. for the specimen!	Realgar An old thumbnail of realgar on matrix.	Realgar A beautiful miniature of realgar, quartz, and pyrite from the 2004 find at the Julcani Mine, Angaraes Province, Huancavelica Department, Peru. Thanks to Mike Keim at Marin Minerals for the specimen and the images!
Row 55
Realgar A beautiful realgar druse on matrix (miniature) from the coal mine at St. Etienne, Loire, Rhône-Alpes, France. Thanks to Guillaumé Laurent's auction on eBay for the specimen and the images!	Rheniite The only known ore of rhenium, rheniite (rhenium sulfide) occurs as tiny silvery crystals on matrix. This locale (Iturup Island, Kudriavy Volcano, Kamchatka, Russia) was one of two known sources for rheniite - the volcanic fumarole that brought it to the surface has since lowered in temperature so no new rheniite is being found. The rhenium metal and compounds used in industry (catalysts, filaments, contacts, and thermocouples) is obtained from molybdenite smelters. Thanks to Mike Keim at Marin Minerals for the specimen and the image!	Safflorite Dark-gray balls of safflorite (cobalt iron sulfide) from the Schlema‑Hartenstein District, Erzgebirge, Saxony, Germany. Thanks to Christian Auer's auction on eBay for the specimen and the image!
Row 56
Safflorite, var. Saflamorite Saflamorite's the varietal name given to cobalt-poor safflorite and it occurs here as a brass-colored crystalline vein in this small-cabinet specimen from the Olafsen Iron Mine, Huffs Church, Hereford Township, Berks County, Pennsylvania. Thanks to Carrie Roberts' auction on eBay for the specimen and the image!	Samsonite A submillimeter grain of black samsonite (a silver manganese sulfantimonite) from the type locality of the Samson Mine, St Andreasberg, Harz Mtns, Lower Saxony, Germany. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!	Sarabauite Sarabauite's a rare calcium antimony oxysulfide - here, in this thumbnail from the type locality of the Sarabau Mine, Bau, Sarawak Province, Borneo, Malaysia, it occurs as deep red crystal masses on calcite. The larger image (lower right) shows some gray native arsenic. This material is often cabbed for jewelry. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 57
Sarabauite Still a one-locale mineral after 30+ years, this small-cabinet sarabauite occurs with stibnite and tan radiating parawollastonite (larger image, lower right)on calcite, from the Sarabau Mine. It has a Hewin's Minerals (Chartley, MA) tag. Thanks to Christopher O'Neill's auction on eBay for the specimen and the images!	Schapbachite Once discredited, schapbachite (a silver bismuth sulfosalt) has been redefined as the high-temperature (above 200°C) dimorph of matildite with enough lead (~18%) present to stabilize its structure at ambient temperatures. This large micro of dark-gray schapbachite in matrix is from the (originally discredited) type locality of the Herrensegen Mine, Wildschapbach valley, Schapbach, Black Forest, Baden-Württemberg, Germany. It has a Yankee Minerals tag and is ex: Martin Lewadny Collection. Thanks to Brian McManus at the Pebble Peddler for the specimen and the images!	Siegenite Siegenite's a rare nickel cobalt sulfide - this large thumbnail (with a dolomite matrix) is from the Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri. Thanks to Kevin Conroy's (Kevin Conroy Minerals) auction on eBay for the specimen!
Row 58
Siegenite From the nearby (see previous entry) West Fork Mine, Centerville, in the Viburnum Trend District comes this excellent micro of a siegenite cluster. Thanks to Hal & Polly Prior's auction on eBay for the specimen and the images!	Skutterudite Skutterudite is cobalt arsenide and an ore of cobalt (usually there's also enough nickel to be worth mining for that, too) and is named after Skutterud, Norway. It forms a complete series with nickel-skutterudite and a partial series with kieftite, its antimony analog. Rare-earth filled synthetic kieftite is the leading contender for high-efficiency thermoelectric materials - the skutterudite / kieftite structure comprises cobalt "cages" which contain one (unfilled) or two (filled) antimony quartets. Rare-eath elements (REEs) are introduced into the unfilled cages, thus creating a high electrically-conductive but low thermally-conductive (the REEs "rattle" in the cobalt cages, absorbing heat) material - the "ideal" thermoelectric. This extremely well-crystallized specimen is from the Tamdrost (Sandroste) cobalt/nickel mine near Bou Azzer, Morocco. Thanks to Rossano Carlini at E-Minerals for the specimen!	Skutterudite A beautiful, mirrorlike small-cabinet specimen of askutterudite from the 2010 find at Bou Azzer, Morocco. Thanks to Krzysztof Dembicz' Spirifer Minerals auction on eBay for the specimen and the images!
Row 59
Sperrylite A micro of a sperrylite cube (0.4mm) with an even smaller partial gold crystal attached from the type locality of the Vermilion Mine, Sudbury, Ontario, Canada. Thanks to Jason Smith's auction on eBay for the specimen and the image!	Stephanite A thumbnail comprising a 7mm cluster of stephanite (another silver antimony sulfide) crystals on a massive stephanite / polybasite matrix from the Fresnillo Mine, Zacatecas, Mexico. It forms an incomplete series with selenostephanite, where selenium replaces part of the sulfur. Thanks to Mike Keim at Marin Minerals for the specimen and the image!	Stephanite A bright sparkly stephanite thumbnail from the Fresnillo Mine, Zacatecas, Mexico. Thanks to JBF Minerals' table at the 2004 Carnegie Gem & Mineral Show for the specimen!
Row 60
Stephanite with Pyrargyrite A large thumbnail of stephanite, pyrargyrite, and pyrite also from the Fresnillo Mine. Most of what's visible is pyrargyrite. Ex: D. Jamriska collection (#2102). Thanks to Anthony Jones for the specimen!	Sternbergite An excellent large micro of sternbergite (an iron silver sulfide) crystals covering matrix from the type locality of Jachymov, Krusne Hory Mts, Karlovy Vary Region, Bohemia, Czech Republic. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Stromeyerite An excellent large micro of analyzed massive stromeyerite (silver copper sulfide) from the Yellow Pine Mine, Sugarloaf District, Boulder County, Colorado. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 61
Stromeyerite A contrasty micro of dark-gray stromeyerite and tan chlorargyrite from Vrancice, Pribram, Bohemia, Czech Republic. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!	Stibnite Stibnite is the primary ore of antimony (72%). Stibnite itself was used as a cosmetic (eye-liner) by the ancient Egyptians. It's dimorphic with metastibnite.	Stibnite A bright lustrous stibnite from the Hunan Province of China, with a calcite coating on the back and one doubly-terminated nailhead calcite (larger picture, bottom). Thanks to Greg Holland at the Stone Haven Mineral Shoppe for the specimen!
Row 62
Stibnite This is a beautiful cluster of stibnite, ciinnabar, and quartz from the Nikitovka Deposit, Gorlovka, Ukraine. Thanks to Dave Hayward at Lucky Strike Minerals for the specimen and the image!	Stibnite A sparkly thumbnail of tiny stibnite crystals from the Post Pit, Carlin Gold mine, Elko, Eureka County, Nevada. Thanks to Rory Howell's auction on eBay for the specimen!	Stibnite An odd stibnite miniature from Piedmont, Italy - dozens of stibnite crystals scattered on (probable) drusy calcite. The larger image (lower right) shows an excellent example of stibnite's "gliding planes" - the crystal running WNW to ESE is bent into the shape of a shallow "U". Thanks to Vince's auction on eBay for the specimen!
Row 63
Stibnite This stibnite miniature from Baia Sprie, Romania shows the typically flattened bladed habit from there. Thanks to Charles Creekmur's auction on eBay for the specimen!	Stibnite A miniature of essentially massive stibnite (the crystals are highly compacted) from the Stayton Mine, San Benito County, California. Thanks to Jay Buscio's auction on eBay for the specimen!	Stromeyerite A thumbnail of massive bluish-gray stromeyerite (silver-copper sulfide) from the Yellow Pine Mine near Crisman, Boulder County, Colorado. Thanks to Tony Nikischer at the Excalibur Mineral Company for the specimen!
Row 64
Stromeyerite and Chloragyrite An excellent micro of stromeyerite with grayish-brown chloragyrite (silver chloride) from the type locality of Vrancice, Príbram, Bohemia, Czech Republic. The field of view in the extreme closeup (larger image, right) photo is 7 mm wide. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!	Sylvanite A thumbnail of sylvanite (gold-silver telluride) flakes (see closeup) in matrix from Victor, Cripple Creek District, Teller County, Colorado - this piece was collected back in the 1930s from either the Ajax or Portland Mine. It forms an incomplete series with kostovite where copper replaces the silver. Thanks to David Emslie's (Prospector's Gold & Gems) auction on eBay for the specimen!	Tellurantimony A miniature of massive tellurantimony (antimony telluride) from the type locality of the Mattagami Lake mine, Matagami, Nord-du-Quebec, Quebec, Canada. It forms a series with tellurobismuthite, where bismuth replaces the antimony. Synthetic antimony telluride can be used as a semiconductor and in solid-state refrigerators. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!
Row 65
Tetradymite A thumbnail of tetradymite (a bismuth sulfotelluride) on biotite from (probably the El Criollo Mine), Cerro Blanco, Tanti, Punilla Department, Cordoba Province, Argentina. The closeup (larger image) shows an unidentified group of minerals on the specimen. Thanks to Eduardo Jawerbaum's auction on eBay for the specimen!	Tetradymite A large thumbnail of highly lustrous millimeter-sized tetradymite crystal aggregates in vugs from the type locality of Zupkov, Zarnovica County, Banska Bystrica Region, Slovakia. Thanks to Csanad Loranth's auction on eBay for the specimen and the images!	Tiemannite A very nice miniature comprising metallic gray tiemannite (mercury selenide), (larger image, top right), black metacinnabar (mercury sulfide, with which it forms an incomplete series), (larger image, bottom left), and micro tan calcites (larger image, bottom right) from the Lucky Boy Mine, Mount Baldy District, Piute County, Utah. Thanks to Anthony Jones' auction on eBay for the specimen!
Row 66
Tochilinite A small cabinet specimen comprising a layer of rare tochilinite (an iron magnesium hydroxylsulfide) crystal aggregates on a dolomitic matrix from Otamo, Siikainen, Finland - one of the very few places where it's found. Tochilinite's also one of the few minerals with a cylindrical habit. Most interesting of all is the fact that tochilinite occurs as rim coatings on calcite grains in chondrite meteorites - the exact process of occurence is still under study. Thanks to Thomas Bee's auction on eBay for the specimen and the image!	Tochilinite A micro of black tochilinite and yellow pyroaurite on matrix, also from the Otamo dolomite quarry. It's the magnesium analog of ferrotochilinite. Thanks to Csanad Loranth's auction on eBay for the specimen and the images!	Trechmannite A good micro of dark-red trechmannite (silver sulfarsenite) with pyrite on matrix from the type locality of the Lengenbach Quarry, Fäld, Binn Valley, Wallis, Switzerland. It's the ambient-temperature trigonal dimorph of high-temperature monoclinic smithite. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!
Row 67
Trogtalite An excellent micro of purplish-silver trogtalite (cobalt selenide) from the El Dragon mine, Antonio Quijarro Province, Potosi Department, Bolivia. It forms a series with krutaite, where copper replaces the cobalt. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Troilite The Alta Mine in Del Norte County, California is one of the very few localities for terrestrial troilite, iron(II) sulfide - this large thumbnail of massive heavily-tarnished troilite is from there (occuring as amygdaloidal masses in serpentine). As with a lot of minerals that tarnish, troilite tarnishes preferentially on certain crystal faces or orientations (the brighter bronzy areas). The vast majority of troilite is found in meteorites. The yellow mineral at the top of the larger image (right) is probably one of the many iron sulfate weathering products. Troilite forms an incomplete series with mackinawite, where nickel replaces some of the iron and there's slightly less sulfur than would be expected. Some references consider it to be a variety (or a polytype) of pyrrhotite. Troilite is not magnetic - there are no vacancies in its structure. Thanks to Jay Buscio's auction on eBay for the specimen!	Tungstenite A micro of a dark-gray submillimeter flake of tungstenite (tungsten disulfide) on dolomitic matrix from the Crevoladossola quarry, Crevoladossola, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy. In 2013, tungstenite monolayers were first synthesized (via CVD) and were shown to have unusual photoluminescent qualities. Also, like molybdenite, purified tungstenite is a dry lubricant. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!
Row 68
Ullmannite An old! (Michigan Mining School label, 1885 - 1897; now Michigan Technological University) miniature of massive ullmannite (nickel sulfantimonide) from somewhere in the Siegen District, Westphalia, Germany. It forms a series with willyamite where cobalt replaces some of the nickel. Thanks to Thomas Bee's auction on eBay for the specimen and the image!	Uzonite A nice micro of golden-yellow uzonite (tetra-arsenic pentasulfide) from the type locality of the Uzon caldera, Kamchatka Oblast', Far-Eastern Region, Russia. Unlike the realgar-pararealgar transformation, light has no effect on uzonite. Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Vaesite A tiny octahedron of vaesite (nickel sulfide) on matrix frtom Sasso delle Lucine, Castelluccio di Moscheda, Montese, Modena Province, Emilia-Romagna, Italy. It forms a complete series with cattierite, its cobalt analog. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!
Row 69
Valleriite Valleriite's in the same group as tochilinite - it's an iron copper hydroxylsulfide. This miniature of bronze valleriite on matrix is from the Palabora Open Pit Mine located at Phalaborwa, Transvaal, Republic of South Africa. Thanks to Thomas Bee's auction on eBay for the specimen!	Vihorlatite A micro of dark-gray drusy vihorlatite (a bismuth telluroselenide) from the type and only locality of Poruba pod Vihorlatom Thanks to Paolo Bracci's auction on eBay for the specimen and the image!	Violarite A nice rich miniature of violarite (a nickel iron sulfide) with pyrite from the type locality of the Vermillion Mine, Denison Township, Sudbury, Ontario, Canada. Thanks to Darrel Merke's (Proton Minerals) auction on eBay for the specimen and the image!
Row 70
Wakabayashilite An excellent miniature of orange wakabayashilite (a mixed arsenic antimony sulfide) on matrix from the Khaidarkan antimony-mercury deposit, Alai Range, Kyrgyzstan. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!	Wakabayashilite A beautiful micro of wakabayashilite in a calcite matrix from the White Caps Mine near Manhattan, Nye County, Nevada. Thanks to Michael Shannon's Shannon & Sons Minerals auction on eBay for the specimen and images!	Wehrlite Wehrlite's the name given to an intimately intergrown mixture of hessite (silver telluride) and pilsenite (bismuth telluride) - this miniature of wehrlite in quartzite comes from an unspecified location (possibly the White Elephant Mine near Vernon, British Columbia) in Canada. Wehrlite is now often the varietal name for argentiferous pilsenite or bismuthian hessite. Thanks to Jonathan Green's auction on eBay for the specimen!
Row 71
Westerveldite A thumbnail of silvery westerveldite (an iron nickel cobalt arsenide) grains throughout matrix from the Illimaussaq Complex, Narsaq, Kitaa Province, Greenland. The westerveldite from here has a much higher iron content than the Spanish type material. Thanks to Tom & Vicki Loomis at Dakota Matrix Minerals for the specimen and the images!	Wittichenite A micro of steel-gray massive wittichenite (a bismuth copper sulfide) in matrix from the type locality of Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany. It may form a series with skinnerite, where antimony replaces the bismuth. Thanks to Paolo Bracci's auction on eBay for the specimen and the photo!	Wittichenite This small thumbnail of wittichenite comes from the famous Schmiedestollen dump at Wittichen. It has a Roger's Minerals, (Val Caron, Ontario) tag, S-100. Thanks to Kristen Burgess' auction on eBay for the specimen!
Row 72
Xanthoconite A micro of bright-red xanthoconite (silver sulfarsenite) and metallic red proustite on matrix from the Imiter (silver) Mine, Djebel Saghro, Ouarzazate Province, Souss-Massa-Draâ Region, Morocco. Ex Bob Rothenberg Collection. It's the monoclinic dimorph of trigonal proustite. Thanks to Chris Stefano's Christopher J. Stefano Fine Minerals auction on eBay for the specimen and the image!	Yushkinite An excellent micro of pinkish-purple platy metallic yushkinite (a vanadium magnesium aluminum hydroxysulfide) crystal aggregates in calcite from the type and only locality of the Yushkinite gorge, Middle Silova-Yakha River, Pai-Khoi Range, Yugorskii Peninsula, Russia. Newer analyses show trace copper and silicon in the yushkinite structure. It's a member of the valleriite group. Thanks to Csanad Loranth's auction on eBay for the specimen and the images!

maintained by: Alan Guisewite

Last Update 26 Mar 2016