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Baumhauerite-2a: Pb3As4S9 Sphalerite: (Zn,Fe)S
Comments: Dark crystal of baumhauerite-2a (same shape as baumhauerite) with olive-green transparent sphalerite crystal on white dolomite. Location: Lengenbach quarry, Binntal, Valais, Switzerland. Scale: Picture 2 cm tall. © Walter Gabriel
Baumstarkite: Ag3(Sb,As)2SbS6
Comments: Fragments of baumstarkite with zoning of darker lamellae with higher As content. (AmMin 87:755). Location: San Genaro mine, Huancavelica Department, Peru.. Scale: See Image. © American Mineralogist
Bauranoite: BaU2O7·4-5(H2O)
Comments: Massive, orange-brown crystalline aggregate of bauranoite. Location: Strel'tsovskoye ore field, Krasnokamensk, Chitinskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: Picture size 6 mm. © Thomas Witzke / Abraxas-Verlag
Bavenite: Ca4Be2Al2Si9O26(OH)2
Comments: Clear, acicular bavenite crystals. Location: Foote mine, Kings Mountain, Cleveland County, North Carolina, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Bayldonite: (Cu,Zn)3Pb(AsO3OH)2(OH)2
Comments: Green, rounded, crystalline bayldonite aggregates. Location: Tsumeb mine, Tsumeb, Namibia. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Bayleyite: Mg2(UO2)(CO3)3·18(H2O)
Comments: Stellate aggregates of pale greenish white, acicular bayleyite crystals on a gossanous matrix with white, snowy aragonite. Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA. Scale: Picture size 3.5 mm. © Paul M. Schumacher
Comments: Bright yellow coatings of bayleyite. Location: Near Moab, Grand County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: Stellate aggregates of acicular bayleyite crystals under short wave UV light showing pale green fluorescence. Location: Hideout #1 mine, White Canyon district, San Juan County, Utah, USA. Scale: Picture size 3.5 mm. © Paul M. Schumacher
Bazhenovite: CaS5·CaS2O3·6Ca(OH)2·20(H2O)
Comments: Yellow, bladed crystals of bazhenovite on matrix. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm. © Thomas Witzke / Abraxas-Verlag
Bazirite: BaZrSi3O9 Sanbornite: BaSi2O5
Comments: Clear glassy minute grains of bazinite to 1mm through out matrix of milky-white sanbornite. The bazirite fluoresces light blue. Location: Snow Cap mine, Rush Creek, Fresno Co., California, USA. Scale: 6.5 x 3 x 2.5cm. © Tom Loomis / Dakota Matrix
Bazzite: Be3(Sc,Al)2Si6O18
Comments: Blue crystals of bazzite. Location: Thiemendorf near Königshain, Lausitz, Sachsen, Germany. Scale: Picture size 1.3 mm. © Thomas Witzke / Abraxas-Verlag
Beaverite: PbCu++(Fe+++,Al)2(SO4)2(OH)6 Mottramite: PbCu(VO4)(OH)
Comments: Specimen of quartz with a thick druse of green mottramite (cuprodescloizite) crystals and a scattered grouping of micro beaverite crystals (lemon yellow in color). Location: Tsumeb Mine, Tsumeb, Namibia. Scale: 3.3 x 2.5 cm. © John Veevaert
Beaverite: PbCu++(Fe+++,Al)2(SO4)2(OH)6
Comments: Yellow earthy coating of beaverite. Location: Hornsilver Mine, Frisco, Beaver County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Becquerelite: Ca(UO2)6O4(OH)6·8(H2O)
Comments: Yellow becquerelite crystals. Location: Shinkolobwe mine, Tantara, Shaba, Dem. Repub. Congo. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Becquerelite: Ca(UO2)6O4(OH)6·8(H2O) Schoepite: (UO2)8O2(OH)12·12(H2O)
Comments: Bright yellow crystals of schoepite on transparent yellow becquerelite. Location: Shinkolobwe mine, Tantara, Shaba, Democratic Republic of the Congo. Scale: . © Lou Perloff / Photo Atlas of Minerals
Bederite: ([ ],Na)Ca2(Mn++,Mg,Fe++)2(Fe+++,Mg++,Al)2Mn++2(PO4)6·2(H2O)
Comments: Dark brown massive bederite. Location: El Penon Pegmatite, Nevados de Palermo, Salta, Argentina. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Behierite: (Ta,Nb)BO4
Comments: A light brownish crystal of behierite in matrix. Location: Manjaka, Sahatany Valley, Antsirabe Region, Madagascar. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Behoite: Be(OH)2 Analcime: NaAlSi2O6·(H2O)
Comments: Gray-white microcline crystals up to 4 cm coated with overgrowth of analcime 18 mm diameter, black aegirine up to 25 mm and most notable, a pale pink behoite. Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Québec, Canada. Scale: 5x4x3 cm. © John Betts - Fine Minerals
Beidellite: Na0.5Al2(Si3.5Al0.5)O10(OH)2·n(H2O)
Comments: Pure white chalky massive beidellite. Location: From near Charlestown, Nevis, Saint Kitts and Nevis, West Indies. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Belendorffite: Cu7Hg6
Comments: Small grains of belendorffite from concentrates. Location: Moschellandsberg, Pfalz, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag