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Beryl: Be3Al2Si6O18 Calcite: CaCO3
Comments: Transparent emerald, the green variety of beryl on calcite (marble) matrix. Location: Coscuez, Boyacá, Colombia. Scale: 2.5 x 2.5 cm. © Fabre Minerals
Beryl: Be3Al2Si6O18
Comments: Transparent Heliodor, the yellow variety of beryl. Location: Wolodarsk, Wolynsky, Ukraine. Scale: 2.8 x 0.7 cm. © John Veevaert
Comments: Red beryl prism on rhyolite matrix. Location: Violet claims, Wah Wah Mountains, Beaver County, Utah, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Comments: Transparent Morganite, the pink variety of beryl. Location: Nuristan, Laghman Province, Afghanistan. Scale: 9.2 x 6.5 cm. © John Veevaert
Comments: Transparent Aquamarine, the blue variety of beryl. Location: Nagar, Pakistan. Scale: 3 x 4 x 8.5 cm. © Dan Weinrich
Comments: Transparent Goshenite, the colorless variety of beryl with orthoclase and muscovite. Location: Pingwu, Sichuan, China. Scale: 9 x 8.5 cm. © Fabre Minerals
Beryl: Be3Al2Si6O18 Apatite-(CaF): Ca5(PO4)3F Muscovite: KAl2(Si3Al)O10(OH,F)2 Apatite: Ca5(PO4)3(OH,F,Cl)
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
Beryllite: Be3SiO4(OH)2·(H2O)
Comments: Dirty white, soft, chalky filling of beryllite (Green Arrow) in a vuggy matrix. Location: Lovozero, Mt. Karnasurt, Kola Peninsula, Russia. Scale: Size Not Given. © Tom Loomis / Dakota Matrix
Beryllonite: NaBePO4
Comments: Clear twinned crystal of beryllonite. Location: Telecio mine, Linopolis, Minas Gerais, Brazil. Scale: Crystal size 1 cm. © John Veevaert
Berzelianite: Cu2Se Umangite: Cu3Se2
Comments: Black massive umangite intergrown with dark blue metallic berzelianite. Location: Borsov, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Berzelianite: Cu2Se
Comments: Blue-black metallic massive berzelianite. Location: Bukov, Western Moravia, Severocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Berzelianite: Cu2Se Athabascaite: Cu5Se4 Umangite: Cu3Se2
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
Berzelianite: Cu2Se Novakite: (Cu,Ag)21As10
Comments: Gray metallic dendritic novakite in white calcite with tarnished black berzelianite. Location: Cerny Dul, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species