Mineral Specimen Images (A)

Aluminoferrotschermakite: [ ]Ca2(Fe2+)3Al2(Si6Al2)O22(OH)2  
Tuperssuatsiaite: Na(Fe+++,Mn)3[Si8O20](OH)2·n(H2O)

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: Al

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

Aluminum: Al

Comments: Deep-green phlogopite with Al flake (at the center). AmMin, 94:1983.
Location: Found in a desilicated pegmatite vein, NW Rila Mountain, Bulgaria. Scale: Scale Bar 1 mm.
© American Mineralogist

Alumohydrocalcite: CaAl2(CO3)2(OH)4·3(H2O)

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

Alumoklyuchevskite: K3Cu3AlO2(SO4)4

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

Alumoklyuchevskite: K3Cu3AlO2(SO4)4

Comments: Green blebs to prismatic or needle-like crystals of alumoklyuchevskite associated with vergasovaite, co-type material.
Location: Main fracture, N breakthrough, Tolbachik Volcano, Kamchatka Peninsula, Russia. Scale: See Image.
© Rruff Database

Alumopharmacosiderite: KAl4(AsO4)3(OH)4·6·5(H2O)

Comments: Minute white specks of alumopharmacosiderite, with tan olivenite and unknown orange material.
Location: Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA. Scale: Picture Size 2 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Alumotungstite: (W,Al)(O,OH)3 (?)

Comments: Pale orange, chalky crust of alumotungstite on ferberite with quartz.
Location: Hemerdon mine, Sparkwell, Plympton, Devon, England. Scale: See Image.
© Rruff Database

Alunite: KAl3(SO4)2(OH)6

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: Al2(SO4)3·17(H2O)  
Jarosite: KFe+++3(SO4)2(OH)6

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: Al2(SO4)3·17(H2O)  
Metavoltine: K4Na4(Fe++,Zn)Fe+++6(SO4)12O2·20(H2O)

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

Alunogen: Al2(SO4)3·17(H2O)  
Voltaite: K2Fe++5Fe+++3Al(SO4)12·18(H2O)

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: Fe+++(SO4)(OH)·3(H2O)

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

Amarillite: NaFe+++(SO4)2·6(H2O)

Comments: Yellowish white, powdery crystals of amarillite crystals.
Location: Grotta de Faraglione, Porte de Levante, Island de Vulcano, Italy. Scale: Specimen Size 15 x10 x 7 mm.
© Sergey Vasiliev / Systematic Mineralogy

Amber: [C,H,O]

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: (Li,Na)Al(PO4)(F,OH)

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

Ameghinite: NaB3O3(OH)4

Comments: Aggregate of white, elongated crystals of ameghinite.
Location: Tincalayu Mine, Salta, Argentina. Scale: Specimen Size 1.5 x 1.5 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Amesite: Mg2Al(SiAl)O5(OH)4

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

Amesite: Mg2Al(SiAl)O5(OH)4  
Titanite: CaTiSiO5

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

Amicite: K2Na2Al4Si4O16·5(H2O)

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