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Bannisterite: KCa(Mn,Fe++,Zn,Mg)21(Si,Al)32O76(OH)16·4-12(H2O)
Comments: Deep red micaceous bannisterite. Location: Zinc Mine, Broken Hill, New South Wales, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Baotite: Ba4(Ti,Nb)8Si4O28Cl Columbite-(Fe): Fe++Nb2O6
Comments: Minute brown crystalline grains of baotite in dark ferrocolumbite (columbite-(Fe)). Location: Sheep Creek, Ravalli County, Montana. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bararite: (NH4)2SiF6 Cryptohalite: (NH4)2SiF6
Comments: White crystalline bararite intermixed with cryptohalite colored yellow by selenium. Location: Shamokin, Northumberland County, Pennsylvani, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Baratovite: KCa7(Ti,Zr)2Li3Si12O36F2
Comments: Pale pink, pearly, micaceous baratovite in syenite rock. Location: Dara-Pioz, Tien Shan, Tadzhikistan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barbertonite: Mg6Cr2(CO3)(OH)16·4(H2O)
Comments: Crystalline, red barbertonite in white and green serpentinite rock. Location: Nevada Creek, Tasmania, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barentsite: Na7AlH2(CO3)4F4
Comments: White, powdery barentsite. Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Baricite: (Mg,Fe++)3(PO4)2·8(H2O)
Comments: Blue, micaceous baricite with some yellow iron staining. Location: Rapid Creek, Yukon Territory, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bariopyrochlore: (Ba,Sr)(Nb,Ti)2(O,OH)7
Comments: Yellow crystalline massive bariopyrochlore. Location: Catalao #2 Mine, Goias, Brazil. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barringerite: (Fe,Ni)2P
Comments: Dark barringerite inclusions in nickel-iron meteorite (polished section. Location: Canon Diablo Meteorite, Meteor Crater, Canon Diablo, Coconino County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barroisite: [ ](CaNa)Mg3AlFe+++Si7AlO22(OH)2
Comments: Black, acicular, compact, massive barroisite. Location: Monte Beigua, Savona, Liguria, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barytocalcite: BaCa(CO3)2
Comments: Pale pink crystalline barytocalcite in dark matrix. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Barytolamprophyllite: Ba2Na3(Fe+++,Ti)3(Si2O7)2(O,OH,F)4 Lamprophyllite: Na2(Sr,Ba)2Ti3(SiO4)4(OH,F)2
Comments: Brownish-yellow barytolamprophyllite on dark green lamprophyllite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bayleyite: Mg2(UO2)(CO3)3·18(H2O)
Comments: Bright yellow coatings of bayleyite. Location: Near Moab, Grand County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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
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
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
Bellidoite: Cu2Se Berzelianite: 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
Belyankinite: Ca1-2(Ti,Zr,Nb)5O12·9(H2O) (?)
Comments: Thin beige coating of belyankinite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bementite: Mn8Si6O15(OH)10
Comments: Brown massive bementite. Location: Olympic Mountains, Washington, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Benjaminite: (Ag,Cu)3(Bi,Pb)7S12 Krupkaite: PbCuBi3S6 Friedrichite: Pb5Cu5Bi7S18
Comments: Crystals of a mixture of friedrichite, krupkaite, and benjaminite, with quartz crystals. Location: Estela Mine, Julcani District, Junin, Peru. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species