Mineral Specimen Images (A)

Abelsonite

Comments: Purplish red crystal fragment of abelsonite.
Location: Green River formation, Uintah County, Utah, USA. Scale: Crystal size 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Abernathyite

Comments: Clear, yellow, crystalline abernathyite crystal group.
Location: Temple Mountain, Every County, Utah, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Abhurite

Comments: Pearly translucent pale yellow crystalline abhurite.
Location: Shipwreck off Hidra, Vest-Agder, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Acanthite

Comments: Pseudo cubic acanthite crystals on matrix.
Location: Rayas mine, Guanajuato, Mexico. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Acanthite   Argentite

Comments: Dark metallic acanthite crystals up to 3 mm. Most of the crystals are a cubic habit, so the acanthite is pseudomorphing the original argentite.
Location: San Juan de Rayas Mine (Rayas Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico. Scale: 18x12x12 mm.
© John Betts - Fine Minerals

Acetamide

Comments: White crystalline crust of acetamide on black shale.
Location: Shamokin, Northumberland County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Actinolite

Comments: Sharp, floater actinolite crystal with a slight green tint.
Location: Namibian dessert, more or less due West of Uis, Namibia. Scale: 8.5 x 2.5 x 2 cm.
© Fabre Minerals

Adamite

Comments: Sprays of adamite with intense color and well defined crystals which stand out from the matrix.
Location: Ojuela mine, Mapimi, Durango, Mexico. Scale: 5 x 5 cm.
© Fabre Minerals

Adamite   Cryptomelane

Comments: Black, rounded balls of cryptomelane and purple, transparent adamite.
Location: Ojuela mine, Mapimi, Druango, Mexico. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Adamsite-(Y)

Comments: Sprays of adamsite-(Y) crystals on matrix.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: 1.5 cm.
© John Veevaert

Aegirine

Comments: Fully-terminated, prismatic crystal of aegirine.
Location: Khibiny Massif, Kola Peninsula, Russia. Scale: Crystal size 2.8 cm.
© John Veevaert

Aegirine   Catapleiite

Comments: Clear crystals of catapleiite with an attached 1.8 cm prismatic crystal of dark aegirine.
Location: Mt. St. Hilaire, Quebec, Canada. Scale: 3.5 x 2.2 cm.
© John Veevaert

Aegirine   Henrymeyerite

Comments: A nearly black crystal of henrymeyerite with dark green prismatic crystals of aegirine in quartz.
Location: Green River formation, Uintah County, Utah, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Aegirine   Lourenswalsite

Comments: Light brownish rosettes of lourenswalsite with dark green crystals of aegirine and white feldspar.
Location: Diamond Jo quarry, Magnet Cove, Hot Springs Co., Arkansas, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Aegirine   Pectolite

Comments: White, cottony pectolite tufts with acicular aegirine.
Location: 3M quarry, Little Rock, Pulaski County, Arkansas, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Aegirine   Calcioburbankite

Comments: Tan crystal spray of calcioburbankite on dark green aegirine.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aegirine   Manganotychite

Comments: Pale rose-tan granular manganotychite with black aegirine prism.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aegirine-augite   Dellaventuraite

Comments: View in plane-polarized light of reddish brown dellaventuraite (OPTK) as an overgrowth on purple-gray aegirine-augite (AE-AG) in a matrix of rounded quartz (QZ) with minor rounded (high relief) apatite grains. (AmMin 90:306).
Location: Kajlidongri manganese mine, Jhabua District, Madhya Pradesh, India. Scale: Picture size 2.5 cm.
© American Mineralogist

Aenigmatite

Comments: Dark, crystal prism of aenigmatite in white albite with astrophyllite.
Location: Mount Eveslogchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aerinite

Comments: Pale blue massive aerinite.
Location: Cripple Creek, Teller County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aerugite

Comments: Small dark green crystals of aerugite.
Location: Johanngeorgenstadt, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aeschynite-(Y)

Comments: Square crystal of aeschynite-(Y) on a matrix of albite, quartz and muscovite.
Location: Val. Pellice, Piedmont, Italy. Scale: Crystal Size 1 mm.
© John Veevaert

Afghanite

Comments: Parallel grouping of three, terminated, blue, opaque afghanite crystals set in matrix.
Location: Sar-eSang, Badakhshan, Afghanistan. Scale: Crystal size 3 cm.
© Dan Weinrich

Afwillite

Comments: Crystallized afwillite prisms.
Location: Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: Crystal size 1.5 mm.
© John Veevaert

Agardite-(Ca)

Comments: Green, acicular sprays of agardite (agardite-Ca?) on matrix.
Location: Big Three mine, Silver Peak, Esmeralda County, Nevada, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Agardite-(Y)

Comments: Fibrous to fine acicular green micro crystals of agardite-(Y) (chlorotile) to 1mm.
Location: Clara mine, Wolfach, Schwarzwald, Baden-W?rttemberg, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Agrellite   Eudialyte

Comments: Tan agrellite grain, with red eudialyte.
Location: Kipiwa Complex, Villedieu, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Agrinierite

Comments: Golden yellow, transparent agrinierite crystals.
Location: Margnac mine, Compreignac, Haute-Vienne, France. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Aheylite

Comments: Colorless radiating spray of aheylite crystals.
Location: Huanuni, Bolivia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Ahlfeldite

Comments: Green encrustations of ahlfeldite on matrix.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aikinite

Comments: Gray metallic prismatic crystals of aikinite and crystalline quartz.
Location: Mike Mine, San Juan County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aikinite   Berryite

Comments: Fine-grained, gray, metallic granular berryite with silvery, metallic, prismatic aikinite.
Location: Mike Mine, San Juan County, Colorado. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ajoite

Comments: Bluish, bladed ajoite crystals.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ajoite   Shattuckite

Comments: Dark blue, tabular crystals of shattuckite on light blue ajoite.
Location: New Cornelia mine, Ajo, Pima County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ajoite

Comments: Aqua blue, long bladed crystals or ajoite on matrix.
Location: New Cornelia mine, Pima Co., Arizona, USA. Scale: Crystal size 0.75 mm.
© Tom Loomis / Dakota Matrix

Akaganeite

Comments: Rusty brown coating of akaganeite on rock.
Location: Wells, Elko County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akatoreite   Rhodonite

Comments: Brown akatoreite in pink rhodonite.
Location: Akatore Creek, Eastern Otago Peninsula, South Island, New Zealand. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akdalaite

Comments: Crystalline white akdalaite.
Location: Bulla Island, Caspian Sea, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akermanite

Comments: White translucent crystals akermanite.
Location: Lago de Vico, Viterbo, Lazio, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akhtenskite

Comments: Dark gray grains of akhtenskite with brown superficial coating.
Location: Akhtenskoye Deposit, Chelyabinsk District, Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Akimotoite

Comments: Electron micrograph of akimotoite (Ak) as columnar grains. Aggregates of akimotoite are adjacent to a large clinoenstatite grain (Cen) with (100) twin lamallae. (AmMin 84:268).
Location: Shock-metamorphosed Tenham chondrite. Scale: See Image.
© American Mineralogist

Akrochordite   Eveite

Comments: Micro crystals (to about 0.75mm) of very pale grayish green eveite in tiny vug with light pink akrochordite. Co-Type specimen & type locality.
Location: Langban, Varmland, Sweden. Scale: 13x10x4 mm.
© Tom Loomis / Dakota Matrix

Aktashite

Comments: Metallic gray grain of aktashite in quartz gangue.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alabandite

Comments: Dark gray stalactitic alabandite.
Location: Broken Hill Proprietary Mine, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alabandite   Daubreelite

Comments: Daubreelite (D), bright metallic white, with alabandite (A) (dull yellow) as inclusions in a polished section of an achondrite meteorite.
Location: Norton County, Kansas. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alacranite

Comments: Red crystals of alacranite.
Location: Mine Wilmsdorfer Schacht, Possendorf near Dresden, Sachsen, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Alamosite

Comments: White alamosite crystal group. John Schneider Collection.
Location: Tsumeb, Namibia. Scale: 3.5x3x2 cm.
© Dan Weinrich

Albite   Plagioclase

Comments: Colorless, lustrous blocky albite crystals to 3 cm in size with a thick dusting of micaceous green micro chlorite.
Location: Acushnet Quarry, Bristol Co., Massachussetts, USA. Scale: 17 x 15 x 7.5 cm matrix.
© Dan Weinrich

Albite   Plagioclase

Comments: Crystal group of bladed albite (variety cleavelandite) crystals.
Location: Taquaral, Minas Gerais, Brazil. Scale: 7.4 x 5 cm.
© John Veevaert

Albite   Schorl

Comments: Several jet-black lustrous crystals of schorl perched on a white albite matrix.
Location: Shengus, Gilgit, Pakistan. Scale: 4 x 3 x 2 cm.
© Isaias Casanova / IC Minerals

Algodonite

Comments: Massive specimen of dark algodonite with vuggy areas filled with minute crystals.
Location: Algodones Mines, Coqu?mbo Province, Chile. Scale: 4x3x3 cm.
© John Betts - Fine Minerals

Algodonite   Koutekite

Comments: Silvery metallic koutekite with darker gray algodonite.
Location: Mohawk Mine, Keweenaw County, Michigan, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aliettite

Comments: Tan to brownish pseudomorph of aliettite after wollastonite.
Location: Ingichka, Uzbekistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Allabogdanite   Schreibersite

Comments: Relict grain of allabogdanite crystal (ABG) surrounded by schreibersite rim (SCHR) in plessite matrix (PL). Black phase is a secondary Fe-Ni-hydroxide. Backscattered electron image. (AmMin, 87:1249).
Location: Onello iron meteorite (high-Ni ataxite) Onello River basin, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Scale bar 10 µ-m.
© American Mineralogist

Allactite

Comments: Brownish red allactite crystals.
Location: Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Allanite-(Ce)

Comments: Dual views of the same 0.8 cm Jet black allanite-(Ce) on quartz.
Location: Tiro Estrella Mine, El Capitan Mts., Lincoln Co., New Mexico, USA. Scale: Crystal Size 0.8 cm.
© John Veevaert

Allanite-(La)

Comments: A single prismatic allanite-(La) crystal with small, lustrous black magnetite crystals, all on a matrix of hedenbergite.
Location: Mina Nueva Vizcaya, Sierra Gorda, Burguillos del Cerro, Badajoz, Spain. Scale: Crystal size 0.9 x 0.5 cm.
© Fabre Minerals

Allanite-(Y)

Comments: Dark brown allanite-(Y) in matrix.
Location: Boden, Marienberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 10 mm.
© Thomas Witzke / Abraxas-Verlag

Allargentum

Comments: Irregular crystalline aggregate grain of allargentum.
Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany. Scale: Specimen size 43 mm.
© Thomas Witzke / Abraxas-Verlag

Alleghanyite

Comments: Massive, brown alleghanyite with white calcite.
Location: Parker Shaft, Franklin, Sussex County, New Jersey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alleghanyite   Galaxite

Comments: Black granular galaxite with reddish alleghanyite and white kutnohorite.
Location: Bald Knob, Alleghany County, North Carolina, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Allophane

Comments: Blue, cuprian, botryoidal allophane on matrix.
Location: Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alluaudite

Comments: Nearly pure crystalline dark green brown mass of alluaudite.
Location: Warusenge Pegmatite, Buranga, Rwanda. Scale: Size Not Given.
© John Veevaert

Alluaudite   Heterosite

Comments: Purple crystalline heterosite with yellow coatings of alluaudite.
Location: Palermo Mine, North Groton, Grafton County, New Hampshire, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Almandine

Comments: Two reddish brown crystals of almandine on matrix.
Location: Fanny Gorge mine, Spruce Pine, Mitchell County, North Carolina, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Almandine   Hypersthene

Comments: Dark green blocky crystals hypersthene with reddish almandine.
Location: Barton Garnet Mine, North Creek, Warren County, Adirondacks, New York, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alsakharovite-Zn

Comments: Light brown crystal fragment of alsakharovite-Zn.
Location: Lepkhe Nelm Mountain, Lovozero, Kola Peninsula, Russia. Scale: Crystal size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Alstonite

Comments: Transparent alstonite crystals.
Location: Hexham, Northumberland, England. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Altaite

Comments: Bronze yellow metallic altaite crystals.
Location: Sonora, Tuolumne County, California, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Altaite   Mattagamite   Tellurantimony

Comments: Silvery metallic intergrowths of mattagamite with tellurantimony and altaite.
Location: Mattagami Lake Mine, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Altaite   Maslovite   Froodite

Comments: Reflected light photomicrograph of maslovite (M), froodite (F), and altaite (A), in chalcopyrite matrix.
Location: Oktyabr'skoye Mine, Norilsk, Krasnoyarsk Territory, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Althausite

Comments: Grayish to maroon colored and opaque crystals of althausite on matrix.
Location: Overntjern, Buskerud, Norway. Scale: 3.2 x 5 cm.
© John Veevaert

Aluminite

Comments: Snow-white, very pure nodules of aluminite.
Location: Newhaven, Sussex, Great Britain. Scale: 5.5 x 3 cm.
© John Veevaert

Aluminoceladonite   Muscovite

Comments: Large, 1cm, purple crystals of muscovite/leucophyllite, (var. alurgite which is an intermediate composition to muscovite and leucophyllite (aluminoceladonite).
Location: Ultevis, Sweden. Scale: 5x3.5x3cm.
© Tom Loomis / Dakota Matrix

Aluminocopiapite

Comments: Small yellow crystals of aluminocopiapite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aluminoferrotschermakite   Tuperssuatsiaite

Comments: Golden acicular tuperssuatsiaite crystal spray with clear apophyllite and dark green aluminoferrotschermigite.
Location: Aris Quarry, Khomas, Namibia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aluminum

Comments: Native aluminum in a polished section.
Location: From a mud volcano in the Caspian Sea near Baku, Azerbaidzhan. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Alumohydrocalcite

Comments: Pinkish-white globular aggregates of alumohydrocalcite.
Location: Carriere de Richelle, Vise, Belgium. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Alumoklyuchevskite

Comments: Very small olive-greenish prismatic crystals of alumoklyuchevskite.
Location: Tolbachik volcano, Kamchatka, Russia. Scale: Sample size 1.8 x 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunite

Comments: Octahedral clear to tan tinted crystals of alunite.
Location: Marysvale, Piute County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Alunogen   Jarosite

Comments: Colorless to white, tabular crystals alunogen on reddish jarosite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunogen   Metavoltine

Comments: Yellow metavoltine with white alunogen.
Location: Carola Mine, Freital, near Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunogen   Voltaite

Comments: Dark greenish-black crystals of voltaite on white alunogen.
Location: Carola Mine, Freital, Dresden, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Amarantite

Comments: Amber-like, long, prismatic, bright red amarantite crystals.
Location: Chuquicamata, Antofagasta, Chile. Scale: Crystal size 3 cm.
© Tom Loomis / Dakota Matrix

Amber

Comments: Rectangular specimen of dark, transparent amber with a large spider entombed inside.
Location: Bitterfeld, Saxony, Germany. Scale: 14x10x10 mm.
© John Betts - Fine Minerals

Amblygonite

Comments: Grayish, massive amblygonite from the type locality.
Location: Chursdorf, Penig, Chemnitz, Saxony, Germany. Scale: Specimen size 35 mm.
© Thomas Witzke / Abraxas-Verlag

Amesite

Comments: White, massive amesite between quartz.
Location: Missoula, Missoula County, Montana, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Amesite   Titanite

Comments: Green titanite (sphene) crystals on purple chromamesite (clinochlore?).
Location: Saranovskaya Deposit, Middle Ural Mountains, Russia. Scale: Picture size 7 cm.
© Dave Barthelmy

Amicite

Comments: White amicite crystals in massive amicite.
Location: Howenegg, Hegau, Baden-Wurttemberg, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aminoffite

Comments: Clear, pyramidal aminoffite crystal.
Location: Langban, Varmland, Sweden. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Ammonioalunite   Kaolinite

Comments: White chalky ammonioalunite on darker kaolinite.
Location: Schoeller Mine, Kladno, Stredocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Analcime

Comments: Brownish yellow transparent analcime crystals.
Location: Guam. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Analcime   Serandite   Natrolite

Comments: Orange-red, blocky serandite with white, blocky natrolite and white, equant grains of analcime.
Location: Mt. St. Hilaire, Canada. Scale: 4 x 3 cm.
© Fabre Minerals

Analcime   Behoite

Comments: Gray-white microcline crystals up to 4 cm coated with overgrowth of analcime 18 mm diameter, black aegirine up to 25 mm and most notable, a pale pink behoite.
Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Qu?bec, Canada. Scale: 5x4x3 cm.
© John Betts - Fine Minerals

Anandite   Gillespite

Comments: Black micaceous anandite with dark red gillespite.
Location: Esquire No. 7 Claim, Big Creek, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anapaite

Comments: Specimen of anapaite on limonite. There are two distinct crystal forms of anapaite - both bladed or tabular and spiky (See inset images).
Location: Taman Peninsula, Black Sea, Russia. Scale: 6 x 5 cm.
© John Veevaert

Anatase

Comments: anatase with calcite.
Location: Hardangervidda, Norway, (1999). Scale: 1.5 x 3 cm.
© Fabre Minerals

Ancylite-(Ce)

Comments: Pinkish brown ancylite-(Ce) blades.
Location: Mont St. Hilaire, Quebec, Canada. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Andalusite

Comments: Wine colored andalusite associated with mica.
Location: Sierra Albarrana, Cordoba, Spain. Scale: 4.5 x 3.5 cm.
© Fabre Minerals

Andersonite

Comments: Yellow crusts of andersonite in sandstone.
Location: Atomic King mine, San Juan County, Utah, USA. Scale: 4x3x2 cm.
© John Veevaert

Andersonite

Comments: Veins of bright yellowish green, andersonite in sandstone. The fluorescence of this mineral is noticeable under ambient office lighting plus a UV lamp.
Location: Atomic King Mine, Cane Creek Canyon, Grand County, Utah, USA. Scale: Specimen size 6 cm.
© Paul M. Schumacher

Andesine   Plagioclase

Comments: Translucent andesine crystal twin.
Location: Maeyama Ueda shi, Nagano, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Andorite

Comments: Metallic, prismatic andorite crystal.
Location: Baie Sprie (Felsobanya), Maramures, Romania. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Andorite   Ferrokesterite

Comments: Small, tetragonal crystal of gray ferrokesterite (circled in thumbnail) attached on the surface of a larger striated andorite specimen.
Location: San Jose mine, Oruro, Bolivia. Scale: Crystal size 0.2 mm.
© John Veevaert

Andradite   Clinochlore

Comments: Transparent topazolite, the yellow variety of andradite on clinochlore.
Location: Yellow Cat Mine, New Idria District, San Benito County. California, USA. Scale: 2.7 x 2.5 cm.
© Fabre Minerals

Andradite

Comments: Andradite (var. Demantoid) Garnet.
Location: Namgar mine, Erongo Mts. Namibia. Scale: 3.5 x 3.2 cm.
© Fabre Minerals

Anduoite

Comments: Backscattered electron Image of euhedral anduoite crystal enclosed in chromian spinel containing lamellae of ilmenite. Image on left is large view, image on right is detailed view. (CanMin, v 39, p 596).
Location: Chromitite ore, Kapitanov deposit, Ukrainian Shield, Ukraine. Scale: See Image.
© Canadian Mineralogist

Angelellite

Comments: Back microcrystalline angelellite on matrix.
Location: Cerro Pululus Tin Mine, Jujuy, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anglesite

Comments: Crystalline anglesite with minor duftite. The crystal at the top of the specimen is partially doubly terminated.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: 2.7 x 2.1 cm.
© John Veevaert

Anglesite

Comments: White anglesite crystals with dark gray posnjackite.
Location: (1st Oxidation Zone), Tsumeb, Namibia. Scale: 8.5 x 5 x 4 cm.
© John Schneider

Anhydrite

Comments: Several terminated groups of light blue anhydrite crystals in parallel growth.
Location: Naica. Chihuahua, Mexico. Scale: 9.5 x 8 x 6 cm.
© Isaias Casanova / IC Minerals

Ankerite   Sphalerite   Dickite

Comments: White, rhombohedral crystals of ankerite and dark gray, metallic sphalerite on beige dickite.
Location: Prego mine, Kladno, Czech Rebublic. Scale: Picture size 2 cm.
© Dave Barthelmy

Annabergite

Comments: Green spray of annabergite crystals.
Location: Laurium, Greece. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Annite

Comments: Bottle-green manganoan annite fragment.
Location: Thiemendorf, K?nigshain, Oberlausitz, Saxony, Germany. Scale: Picture size 2.5 mm.
© Thomas Witzke / Abraxas-Verlag

Anorthite   Plagioclase

Comments: Opaque white crystal of anorthite with dark brown solidified lava coating.
Location: Miyake-jima, Shizuoka, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anorthoclase

Comments: Two white crystals of anorthoclase (possibly mislabeled and actually anorthite.
Location: Kusukidani, Wakayama Prefecture, Kinki Region, Honshu island, Japan. Scale: 15x14x6 mm.
© John Betts - Fine Minerals

Ansermetite

Comments: Environmental scanning electron microscope image of the ansermetite crystals. (CanMin, v 41, p 1425).
Location: Fianel, Val Ferrera, Eastern Swiss Alps. Scale: Scale bar 20 µ-m.
© Canadian Mineralogist

Anthoinite   Cerotungstite-(Ce)   Ferberite

Comments: Yellow cerotungstite-(Ce), with black ferberite veins and whitish anthoinite.
Location: Bugarama, Rwanda. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthoinite   Mpororoite

Comments: White chalky massive mpororoite with brown anthoinite.
Location: Kara Mine, Tasmania, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Anthophyllite   Biotite

Comments: Fibrous mass of anthophyllite as a shell around biotite.
Location: Hermanov, Severocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Antigorite

Comments: Yellowish green, fibrous antigorite.
Location: East Broughon, Quebec, Canada. Scale: 22x10 cm.
© Dave Barthelmy

Antigorite   Chromite

Comments: Chromite veins in yellow to green antigorite with picrolite, chromian antigorite and dolomite (polished section).
Location: Wood's Mine, near 'Texas', Little Britain Township, Lancaster County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Antimony

Comments: Massive pure native antimony.
Location: Arechuybo, Chihuahua, Mexico. Scale: Size Not Given.
© John Veevaert

Antimony   Valentinite

Comments: Beige valentinite crystals with red kermesite in a matrix of gray, massive antimony.
Location: South-Ham Antimony mine, Lake Nicolet, Quebec, Canada. Scale: Picture Size 3 cm.
© Dave Barthelmy

Antlerite

Comments: Dark green crystals of antlerite on sandstone.
Location: Ray mine, Ray, Pinal County, Arizona, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Antlerite   Metaschoepite

Comments: Yellow crystals of metaschoepite with green antlerite.
Location: P?hla-Tellerh?user Gallery, P?hla, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Apachite

Comments: Blue crusts of apachite on skarn rock.
Location: Christmas Mine, near Hayden, Gila County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apachite

Comments: Spherical crystals 0.2mm of blue apachite as grape-like botryodal aggregates.
Location: Christmas mine, Gila Co., Arizona, USA. Scale: Picture size 3.5 mm.
© Tom Loomis / Dakota Matrix

Apatite   Carbonate-fluorapatite

Comments: Pink, colliform carbonate-fluorapatite on matrix.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Apatite   Fluorapatite   Beryl   Muscovite

Comments: Pink crystals of fluorapatite with pale blue beryl (aquamarine) on books of muscovite crystals.
Location: Nagar area, Gilgit district, Northern Areas, Pakistan. Scale: 3 x 3 cm.
© Dan Weinrich

Apatite   Robertsite   Carbonate-hydroxylapatite

Comments: Black crystals of Robertsite on pink carbonate-hydroxylapatite.
Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Aphthitalite

Comments: Aphthitalite crystals.
Location: Searles Lake, San Bernardino County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Apjohnite

Comments: White crystalline mass of apjohnite.
Location: Terlano, Bolzano, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aplowite   Villiaumite

Comments: Pink aplowite laths intergrown with lustrous, red, massive villiaumite.
Location: Mt Rasvumchorr, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: 20x19x18 mm.
© John Betts - Fine Minerals

Apophyllite   Hydroxyapophyllite   Stilbite

Comments: 3 cm. pink-colored rosette of stilbite and clear "apophyllite" (probably hydroxyapophyllite) in an amygdaloidal cavity.
Location: Aurangabad District, Jalgaon, India. Scale: Specimen size 6 cm.
© Dave Barthelmy

Apophyllite   Fluorapophyllite   Stilbite

Comments: Doubly terminated, very clear and perfect fluorapophyllite with white stilbite.
Location: Jalgaon, India. Scale: 4 x 3.5 cm.
© Fabre Minerals

Apophyllite   Hydroxyapophyllite

Comments: Crystal cluster of tabular hydroxyapophyllite.
Location: Wessels Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 2.5 x 2.3 cm.
© John Veevaert

Apophyllite   Kinoite

Comments: Crystals of dark blue kinoite and clear apophyllite.
Location: Christmas Mine, Gila County, Arizona, USA. Scale: Crystal size 2.5 mm.
© John Veevaert

Apophyllite

Comments: Mint green to clear apophyllite flat top crystals in a circular stellate cluster on pink stilbite.
Location: Rahuri, Maharashtra State, India. Scale: Specimen size 10 cm.
© Kevin Ward

Apuanite

Comments: Black tabular crystal of apuanite on matrix.
Location: Buca della Vena Mine, Stazzema, Versilia Valley, Apuan Alps, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Aragonite

Comments: Clear, crystalline aragonite prism.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Aramayoite   Miargyrite

Comments: Aramayoite is present as large thin plates (blue iridescence) to 1mm in massive gray miargyrite matrix.
Location: Julcani Silver mine, Huancavelica Dept., Peru. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Aravaipaite

Comments: Colorless thin tabular crystals of aravaipaite.
Location: Grand Reef Mine, Aravaipa District, Graham County, Arizona, USA. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Arcanite

Comments: Opaque olive-green mottled-colored arcanite.
Location: Tunnel #1, Santa Ana Tin Mine, Orange County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Archerite   Biphosphammite

Comments: Buff-colored biphosphammite with white archerite crusts.
Location: Cockelbiddy Cave, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arctite

Comments: Clear glassy crystalline arctite with magenta villiaumite in pegmatite.
Location: Vuonnemiok River, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ardealite

Comments: Ardealite powder.
Location: Moorba Cave, Jurien Bay, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ardennite

Comments: Yellow ardennite crystals in white quartz matrix.
Location: Salmch?teau, Vielsalm, Stavelot Massif, Ardennes, Luxembourg Province, Belgium. Scale: 30x20x17 mm.
© John Betts - Fine Minerals

Arfvedsonite

Comments: Prismatic crystals of black arfvedsonite in white feldspar matrix.
Location: Kangerdluarsuk, Il?maussaq Massif, Greenland. Scale: 8x3x3 cm.
© John Betts - Fine Minerals

Arfvedsonite   Seidozerite

Comments: Dark red translucent seidozerite with vitreous, black arfvedsonite.
Location: Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentite   Acanthite

Comments: Dark metallic acanthite crystals up to 3 mm. Most of the crystals are a cubic habit, so the acanthite is pseudomorphing the original argentite.
Location: San Juan de Rayas Mine (Rayas Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico. Scale: 18x12x12 mm.
© John Betts - Fine Minerals

Argentojarosite

Comments: Yellow crystalline massive argentojarosite.
Location: Eagle Mine, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentopyrite

Comments: Metallic, twinned argentopyrite grain on matrix.
Location: St. Andreasberg, Harz, Lower Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argyrodite

Comments: Lead gray metallic aggregate of argyrodite crystals.
Location: Veta Galufa, Colquechaca, Potosi Dept., Bolivia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argyrodite

Comments: Gray, metallic, massive, crystalline argyrodite ore.
Location: Himmelsf?rst mine, Brand-Erbisdorf bei Freiberg, Erzgebirge, Sachsen. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Arhbarite

Comments: Deep blue, smooth, botryoidal aggregate of arhbarite in a 2mm vug associated with atacamite.
Location: El Guanaco mine, Atacama, Tal Tal(?), Chile. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Armenite

Comments: Translucent, white armenite crystals.
Location: Simplon Pass, Brig, Valais, Switzerland. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Armstrongite

Comments: Tan massive armstrongite aggregate in granite.
Location: Khan-Bogdo Massif, Gobi, Mongolia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arrojadite

Comments: Brownish to clear crystals of arrojadite on matrix.
Location: Big Fish river area, Yukon Territory, Canada. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Arrojadite

Comments: Tabular, diamond shaped golden yellow crystal of arrojadite.
Location: Rapid Creek, Yukon, Canada. Scale: Crystal to 5mm..
© Tom Loomis / Dakota Matrix

Arsendescloizite

Comments: Spherical aggregates of arsendescloizite crystals.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Arsenic

Comments: Bright, metallic, gray, crystalline aggregate or arsenic.
Location: Niederschlema, Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Arsenic

Comments: Botryoidal-concentric aggregate of arsenic with white calcite crystals.
Location: Schneeberg, Erzgebirge, Sachsen, Germany. Scale: 7 x 4 cm.
© Thomas Witzke / Abraxas-Verlag

Arsenic   Claudetite

Comments: Colorless prismatic crystal of claudetite on native arsenic.
Location: J?chymov (St Joachimsthal), Krusn? Hory (Erzgebirge), Z?padocesk? Kraj, Bohemia, Czech Republic. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Arseniopleite

Comments: Massive, orange arseniopleite.
Location: Sj?gruvan, Grythyttan, ?rebro, Sweden. Scale: Not Given.
© Tom Loomis / Dakota Matrix

Arseniosiderite

Comments: Yellowish brown, roughly spherical aggregates of arseniosiderite crystals on matrix.
Location: Tsumeb mine, Tsumeb, Namibia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Arseniosiderite   Cobaltarthurite

Comments: Olive-greenish crystalline druse of cobaltarthurite with spherical arseniosiderite.
Location: Pastrana, Mazarr?n, Murcia, Spain. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Arsenocrandallite

Comments: Micro, pale blue botryoids of arsenocrandallite on dark green olivenite and quartz.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenogorceixite

Comments: Lime colored crystalline arsenogorceixite on dark green olivenite.
Location: Bali Lo, Ashburton Downs, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenogorceixite

Comments: White arsenogorceixite spherules to less than 0.25mm in vuggy matrix.
Location: Clara mine, Schwarzwald, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Arsenogoyazite   Olivenite

Comments: White micro-botryoids of arsenogoyazite with light green acicular crystal sprays of olivenite and dark green malachite on brown limonite.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenogoyazite

Comments: Clear, white micro (<0.25mm) rhombohedral arsenogoyazite crystals.
Location: Clara mine, Schwarzwald, Germany. Scale: Picture size 0.5 cm.
© Tom Loomis / Dakota Matrix

Arsenolamprite

Comments: Needle like gray crystals of arsenolamprite in calcite matrix.
Location: Mackenheim,, Odenwald, Germany. Scale: Crystal size 1 mm.
© Tom Loomis / Dakota Matrix

Arsenolamprite

Comments: REM (Raster Electron Microscope) image of well cristallized arsenolamprite fragments.
Location: Mine dump near shaft 371, Hartenstein, Germany. Scale: See Image.
© Thomas Schlothauer

Arsenolamprite

Comments: Vein of arsenolamprite in matrix.
Location: Mine dump near shaft 371, Hartenstein, Germany. Scale: See Image.
© Thomas Schlothauer

Arsenolite

Comments: Brownish yellow octahedrons of arsenolite on matrix.
Location: White Caps mine, Manhattan, Nye County, Nevada, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Arsenopalladinite   Isomertieite   Gold   Bornite

Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light.
Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Arsenopalladinite

Comments: Arsenopalladinite micro crystal.
Location: Itabira, Minas Gerais, Brazil. Scale: Not Given.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsenopyrite   Siderite

Comments: White, metallic arsenopyrite and tan siderite crystals.
Location: Panasqueira (2000, 3rd level), in the region of Beira Baixa, Portugal. Scale: 11 x 7 cm.
© Fabre Minerals

Arsenpolybasite

Comments: Back, crystalline arsenpolybasite in quartz.
Location: Medenec, Severocesky, Moravia, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arsentsumebite

Comments: Crystallized arsentsumebite in a vuggy rock matrix.
Location: Tsumeb Mine, Tsumeb, Namibia. Scale: Crystals to 0.25mm.
© John Veevaert

Arsenuranylite

Comments: Yellow crystalline arsenuranylite.
Location: Rudnoje, Bukhara District, Uzbekistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arthurite   Pharmacosiderite

Comments: Altered rhyolite vug lined with brilliant apple green arthurite and cubic green crystals of pharmacosiderite.
Location: Majuba Hill Mine, Pershing County, Nevada. USA. Scale: 2.7 x 1.7 cm.
© John Veevaert

Arthurite

Comments: Radiating sprays of acicular arthurite.
Location: Majuba Hill mine, Pershing County, Nevada, USA. Scale: Spray size 2.5 mm.
© Tom Loomis / Dakota Matrix

Artinite

Comments: Bright, white acicular sprays of artinite crystals on matrix.
Location: New Idria district, San Benito County, California, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Artinite

Comments: White, acicular clusters of artinite on matrix.
Location: San Benito County, California, USA. Scale: Cluster size 1.3 cm.
© Minernet

Artsmithite

Comments: White to tan, radial, acicular crystals of artsmithite on matrix.
Location: Funderburk Prospect, Pike County, Arkansas, USA. Scale: Picture size 0.7 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Artsmithite

Comments: White or faint green platy micro crystals of artsmithite on matrix.
Location: Funderburk prospect, Pike County, Arkansas, USA. Scale: Crystal size 0.5 mm.
© Tom Loomis / Dakota Matrix

Asbecasite

Comments: Brownish yellow asbecasite prismatic crystal.
Location: Cervandone, Val d'Ossola, Lombardy, Italy. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Asbolane

Comments: Brownish red dull grains of asbolane to 2mm in matrix.
Location: Lipovka, Middla Urals, Russia. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Ashburtonite

Comments: Blue-green crystalline crust of ashburtonite on matrix.
Location: Anticline Deposit, Ashburton Downs, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Asisite

Comments: Orange brownish asisite on matrix.
Location: Kombat Mine, Kombat, Namibia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Asselbornite

Comments: Small orange cubes of asselbornite on yellow uranophane.
Location: Wei?er Hirsch Mine, Schneeberg, Erzgebirge, Sachsen, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Astrocyanite-(Ce)

Comments: Blue-green bladed astrocyanite-(Ce) crystals on black uraninite ore. Schumacher Collection.
Location: Kamoto East Open cut, Kamoto, Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Za?re). Scale: Picture size 2 cm.
© Paul M. Schumacher

Astrophyllite

Comments: Dark brown acicular masses of astrophyllite in calcite matrix.
Location: Khibini, Kola Peninsula, Russia. Scale: 11 x 9 cm.
© Fabre Minerals

Atacamite

Comments: Atacamite in a well crystallized pocket.
Location: Mina Lily, Pisco Umay, Ica Dept. Peru. Scale: 5 x 4.5 cm.
© Fabre Minerals

Athabascaite   Umangite   Berzelianite

Comments: Reflected light photomicrograph of umangite (pinkish), berzelianite (gray), athabascaite (small white areas in berzelianite), calcite (olive).
Location: Sierra de Umango, La Rioja, Argentin. Scale: Not Given.
© Jeff Weissman / Photographic Guide to Mineral Species

Atokite   Taimyrite

Comments: Photomicrograph (oil immersion) of atokite and taimyrite intergrowth inside tetraauricupride reaction rim on Pt-Fe alloy. Outlined section shows atokite relics within taimyrite. (CanMin, v 42, p 610).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia,. Scale: See Image.
© Canadian Mineralogist

Atokite   Sobolevskite

Comments: Back-scattered electron image showing a) intergrowth of atokite, mertieite-II [Pd8Sb3] and telluroan sobolevskite [(Pd,Pt)(Bi,Te)] within tetra-auricupride rim. (CanMin, v 42, p 611).
Location: Kondyor PGE placer, Khabarovskiy Kray, eastern Siberia, Russia. Scale: See Image.
© Canadian Mineralogist

Attakolite

Comments: Pink to yellowish attakolite with black hematite.
Location: Vestana Iron Mine, near Nasum, Skane, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aubertite

Comments: Aqua to white massive aubertite.
Location: Chuquicamata, Antofagasta, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Augelite

Comments: Apple green augelite with semi-transparent, well developed, brilliant crystals.
Location: Rapid Creek, Yukon, Canada. Scale: 3.5 x 2 cm.
© Fabre Minerals

Augelite

Comments: Green to white, striated, blocky augelite crystal on matrix.
Location: Ortega mine, Ancash dept., Peru. Scale: Crystal length 2.3 cm.
© Tom Loomis / Dakota Matrix

Augite

Comments: Clear, dark gray augite prisms in matrix.
Location: Isle of Ischia, near Naples, Compania, Italy. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Augite   Calzirtite   Richterite

Comments: Gray irregular grain of calzirtite (see arrow) in fibrous augite with dark red richterite.
Location: Jacupiranga Mine, Cajati, Sao Paulo, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Augite   Tuscanite

Comments: Translucent tuscanite microcrystal in in vug in low-Fe augite (var. fassaite).
Location: Pitigliano Quarry, Grosseto, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aurichalcite

Comments: Sky-blue radiating acicular crystals of aurichalcite covering matrix.
Location: Lucin, Utah, USA. Scale: 6.5 x 3 x 2 cm with 5 mm crystals.
© Dan Weinrich

Auricupride

Comments: Golden metallic veins of auricupride in quartz.
Location: Vacos Hielados, Chile. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Aurorite

Comments: Brown, dendritic aurorite in white calcite.
Location: Aurora Mine, Hamilton, White Pine County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Austinite

Comments: Green, spherulitic clusters of austinite crystals.
Location: Gold Hill mine, Deep Creek Mts., Tooele County, Utah, USA. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Autunite

Comments: Fluorescent, tabular to platy, yellow green autunite crystals on matrix.
Location: Margnac, Haute Vienne, France. Scale: 1 cm.
© John Veevaert

Autunite   Meta-autunite

Comments: Corner of a meta-autunite crystal showing the dehydration of autunite (dark green) to meta-autunite (lighter yellowish green)..
Location: Daybreak Mine, Spokane County, Washington, U.S.A.. Scale: See Image.
© Paul M. Schumacher

Avogadrite   Ferruccite

Comments: Very small, white crystals of ferrite on massive, yellowish avogadrite.
Location: Vesuvius, Naples, Naples province, Campania, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Avogadrite   Malladrite

Comments: Botryoidal pinkish-white avogadrite with yellow malladrite.
Location: Eruption of 1926, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Avogadrite   Malladrite

Comments: Yellow-orange crystalline malladrite with pinkish white avogadrite.
Location: Eruption of 1926, Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Awaruite

Comments: Massive awaruite.
Location: Heazlewood River, Tasmania, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Azoproite

Comments: Black, acicular azoproite in matrix.
Location: Tazheran Massif, Transbaikalia, Irkutsk District, Siberia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Azurite   Malachite

Comments: Dark blue stubby pyramidal azurite crystals and green botryoidal-shaped radial aggregates of malachite.
Location: Nevada Lode Mine, San Juan Co., Utah, USA. Scale: 4 cm.
© Dave Barthelmy

Azurite   Clinotyrolite

Comments: Light blue acicular crystals of clinotyrolite on dark blue azurite.
Location: Lovelock mine, Churchill County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Azurite

Comments: Sharp, dark blue, crystalline azurite group.
Location: Puit IX, Touissit, Oujda. Scale: 5 x 3.3 x 1.3 cm.
© Fabre Minerals

Azurite   Cyanotrichite

Comments: Blue, hairy crystals of cyanotrichite with dark-blue, blocky azurite on a green, malachite matrix.
Location: Maid of Sunshine Mine, Cochise County, Arizona, USA. Scale: See Image.
© Jeff Weissman / Photographic Guide to Mineral Species