Mineral Specimen Images (A)

Andradite: Ca3Fe+++2(SiO4)3  
Glagolevite: NaMg6[Si3AlO10](OH,O)8·H2O

Comments: Pearly white plates of glagolevite with olive-colored andradite dodecohedrons.
Location: Zheleznyi Mine (Iron Mine), Kovdor Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 12x10 mm.
© Pavel M. Kartashov

Andreyivanovite: FeCrP

Comments: BSE image of serpentine (gray) grain containing curvilinear arrays of andreyivanovite crystals (A) and associated florenskyite (F) lath. AmMin v93, p1296.
Location: Kaidun meteorite (South Yemen). Scale: Scale Bar 20 µm.
© American Mineralogist

Anduoite: (Ru,Os)As2

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

Andyrobertsite: KCdCu5(AsO4)4[As(OH)2O2]·2(H2O)

Comments: Blue andyrobertsite with blue calcioandyrobertsite on green olivenite. Holotype specimen Min Record cover.
Location: Tsumeb Mine, Tsumeb, Namibia.. Scale: Specimen 4.1 cm.
© William Pinch

Angastonite: CaMgAl2(PO4)2(OH)4?7H2O

Comments: SEM image of platy, striated crystals of angastonite.
Location: Angaston, South Australia. Scale: Unknown.
© Mineralogical Magazine

Angastonite: CaMgAl2(PO4)2(OH)4?7H2O

Comments: White acicular to short prismatic crystals of angastonite covering a dark matrix.
Location: Penrice quarry, Angaston, South Australia, Australia. Scale: Overall: 5.5 x 3.5 x 2 cm.
© Tom Loomis / Dakota Matrix

Angelaite: Cu2AgPbBiS4  
Miharaite: Cu4FePbBiS6

Comments: Image of a polished section of the ore (without analyzer): galena (ga) with numerous inclusions miharaíte (wi) and angelaíte (an). Pyrite (pi), chalcopyrite (cp). (AsocGeolArgent, v59, no 4).
Location: Angela mine, IS-type mineralization in the district springs, Chubut, Argentina. Scale: See Image.
© Revista de la Asociación Geológica Argentina

Angelellite: Fe+++4(AsO4)2O3

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

Anglesite: PbSO4

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: PbSO4

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: CaSO4

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

Ankangite: Ba(Ti,V+++,Cr+++)8O16

Comments: Black prismatic ankangite inclusions in quartz.
Location: Curvelo region, Minas Gerais, Brazil. Scale: See Image.
© Rruff Database

Ankerite: Ca(Fe++,Mg,Mn)(CO3)2  
Sphalerite: (Zn,Fe)S  
Dickite: Al2Si2O5(OH)4

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

Ankinovichite: (Ni,Zn)Al4(VO3)2(OH)12(H2O)2.5

Comments: Aggregates of pale green thin pseudohexagonal plates of ankinovichite on matrix.
Location: Kara-Chagyr Mountain, Fergana, Fergana Valley, Osh Oblast, Kyrgyzstan. Scale: See Image.
© Rruff Database

Annabergite: Ni3(AsO4)2·8(H2O)

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

Annite: KFe++3AlSi3O10(OH,F)2

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

Anorthite: CaAl2Si2O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

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: (Na,K)AlSi3O8

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: MnV2O6·4(H2O)

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

Antarcticite: CaCl2·6(H2O)

Comments: White antarcticite crystals in sealed in mineral oil.
Location: Bristol Lake, Mojave Co.,California, USA. Scale: Sample Jar 6 cm.
© Diederik Visser