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Balangeroite: (Mg,Fe+++,Fe++,Mn++)42Si16O54(OH)40
Comments: Brown fiberous crystals of balangeroite in metamorphic shist. Location: Mt. S,Vittore, Balangero, Piedmont, Italy. Scale: 5 1/2" x 2 1/4". © Chris Wright / Wrights Rock Shop
Balkanite: Cu9Ag5HgS8
Comments: Gray aggregate of balkanite on quartz. Location: Manhattan District, Nye Co., Nevada, USA. Scale: Picture Size 0.4 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Comments: B&W image of a polished section of balkanite with polysynthetic twinning. (AmMin v58:11). Location: Sedmochislenitsi mine, Vratsa district, in the western part of the Stara Planina, Bulgaria. Scale: 330 X. © American Mineralogist
Bambollaite: Cu(Se,Te)2
Comments: Grannular aggregate of massive bambollaite-bearing ore. Location: Moctezuma mine, Sonora, Mexico. Scale: Not Given. © Jeanne S. Broome / ASDM Sonoran Desert Digital Library
Bamfordite: Fe+++Mo2O6(OH)3·(H2O)
Comments: Scanning electron micrograph showing the typical morphology of bamfordite crystals. (AmMin, 83:173). Location: Abandoned W-Mo-Bi mines at Bamford, Queensland, Australia. Scale: Scale Bar 20 µm. © American Mineralogist
Banalsite: BaNa2Al4Si4O16
Comments: Massive brown to flesh colored banalsite in matrix. Location: Benallt Mine, Lleyn Peninsula, Wales, UK. Scale: Specimen Size 5x6 cm. © Diederik Visser
Bandylite: CuB(OH)4Cl
Comments: Blue crystals of bandylite on quartz. Location: Queténa mine, Calama, Antofagásta Province, Chile. Scale: 8x5x3 cm. © John Betts - Fine Minerals
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
Baotite: Ba4(Ti,Nb)8Si4O28Cl
Comments: Brown masses of crystalline baotite in white quartz matrix. Location: Inner Mongolia, Autonomous Region, China. Scale: Picture size 2 cm. © Tom Loomis / Dakota Matrix