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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 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 Bellidoite: Cu2Se
Comments: Dark bellidoite inclusions in black berzelianite with white calcite. Location: Habri, near Tisnov, Jihomoravsky, Czech Republi. 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 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
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
Berzeliite: (Ca,Na)3(Mg,Mn)2(AsO4)3
Comments: White calcite with included grains of yellowish-orange berzeliite in matrix. Location: Langban, Filipstad, Varmland, Sweden. Scale: 3 x 2.2 cm. © John Veevaert
Betafite: (Ca,U)2(Ti,Nb,Ta)2O6(OH)
Comments: Brown hexoctahedral crystal of betafite on greenish apatite crystals. Location: Silver Crater Mine, Bancroft, Ontario, Canada. Scale: 2-1/4 cm across. © Paul M. Schumacher
Betekhtinite: Cu10(Fe,Pb)S6
Comments: Black crystalline aggregate of betekhtinite with white calcite. Location: Twin Pocket, Mine #57, Dzhezkazgan, Kazakhstan. Scale: 9.5 x 7.5 cm. © Fabre Minerals
Betpakdalite: [Mg(H2O)6]Ca2(H2O)13[Mo++++++8As+++++2Fe+++3O36(OH)]·4(H2O)
Comments: Yellow crust of betpakdalite on quartzite. Location: Sadisdorf, Erzgebirge, Sachsen, Germany. Scale: 10 x 6 cm. © Thomas Witzke / Abraxas-Verlag
Beudantite: PbFe+++3(AsO4)(SO4)(OH)6
Comments: Sharp and lustrous crystals of beudantite to 4 mm across on quartz. Location: Tsumeb Mine, Tsumeb, Namibia. Scale: 2.7 x 2.5 cm. © John Veevaert
Beudantite: PbFe+++3(AsO4)(SO4)(OH)6 Scorodite: Fe+++AsO4·2(H2O)
Comments: Blue, 2 cm in length scorodite crystals on a sparkling matrix of brilliant brown-black beudantite. Location: Tsumeb, Namibia. Scale: 8 x 5 x 3 cm. © John Schneider
Beusite: (Mn++,Fe++,Ca,Mg)3(PO4)2
Comments: Massive pale pinkish-beige beusite with blue vivianite. Location: Remmelberg, Oberpfalz, Bavaria, Germany. Scale: Picture size 7 mm. © Thomas Witzke / Abraxas-Verlag
Beyerite: (Ca,Pb)Bi2(CO3)2O2
Comments: Greenish yellow crusts of beyerite on pegmatite. Location: Harding Mine, Taos County, New Mexico, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bianchite: (Zn,Fe++)(SO4)·6(H2O)
Comments: White powdery crust of bianchite on clear to white gypsum. Location: Glomsrudhollen, Amot, Modum, Buskerud, Norway. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bicchulite: Ca2Al2SiO6(OH)2
Comments: White microcrystalline bicchulite associated with calcite and vesuvianite. Location: Fuka Mine, Bitchu-Cho, Okayama Prefecture, Chugoku Region, Honshu Island, Japan. Scale: See Image. © Rruff Database
Bideauxite: Pb2AgCl3(F,OH)2
Comments: Brownish cubic crystals of bideauxite with blue boleite in tan limonitic matrix. Location: Mammoth-St Anthony mine, Pinal County, Arizona, USA. Scale: Specimen size 2 x 3 cm. © Dave Barthelmy
Comments: Richard Bideaux, American mineralogist, co-author of the Handbook of Mineralogy, Volumes I to V, mineral collector, and the person whom bideauxite is named after, kindly provided the mineral name pronunciation for bideauxite. Location: Tucson Convention Center, 50th Tucson Gem and Mineral Show, February 14, 2004. Scale: NA. © Dave Barthelmy
Bieberite: CoSO4·7(H2O)
Comments: Pink crust of bieberite with dark blue chalcanthite. Location: Katanga, Shaba, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species