Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Actinolite: Ca2(Mg,Fe++)5Si8O22(OH)2
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: Zn2(AsO4)(OH)
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
Allanite-(La): Ca(REE,Ca)Al2(Fe++,Fe+++)(SiO4)(Si2O7)O(OH)
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
Anatase: TiO2
Comments: anatase with calcite. Location: Hardangervidda, Norway, (1999). Scale: 1.5 x 3 cm. © Fabre Minerals
Andalusite: Al2SiO5 = Al[6]Al[5]OSiO4
Comments: Wine colored andalusite associated with mica. Location: Sierra Albarrana, Cordoba, Spain. Scale: 4.5 x 3.5 cm. © Fabre Minerals
Andradite: Ca3Fe+++2(SiO4)3
Comments: Andradite (var. Demantoid) Garnet. Location: Namgar mine, Erongo Mts. Namibia. Scale: 3.5 x 3.2 cm. © Fabre Minerals
Andradite: Ca3Fe+++2(SiO4)3 Clinochlore: (Mg,Fe++)5Al(Si3Al)O10(OH)8
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
Apophyllite-(KF): (K,Na)Ca4Si8O20(F,OH)·8(H2O) Stilbite-Ca: NaCa4[Al8Si28O72]·n(H2O) (n=28-32) Apophyllite: KCa4(Si4O10)2F·8(H2O)
Comments: Doubly terminated, very clear and perfect fluorapophyllite with white stilbite. Location: Jalgaon, India. Scale: 4 x 3.5 cm. © Fabre Minerals
Arsenopyrite: FeAsS Siderite: Fe++CO3
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
Astrophyllite: K2Na(Fe++,Mn)7Ti2Si8O26(OH)4
Comments: Dark brown acicular masses of astrophyllite in calcite matrix. Location: Khibini, Kola Peninsula, Russia. Scale: 11 x 9 cm. © Fabre Minerals