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Buddingtonite: (NH4)AlSi3O8·0.5(H2O)
Comments: Chalky massive buddingtonite. Location: Sharon Heights, Menlo Park, San Mateo County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bukovite: Tl2Cu3FeSe4
Comments: Silvery metallic minute aggregates of bukovite in white calcite (polished mount). Location: Predborice, Stredocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Burbankite: (Na,Ca)3(Sr,Ba,Ce)3(CO3)5
Comments: Yellow massive burbankite. Location: Big Sandy Creek, near Rocky Boy, Big Bear Paw Mountains, Hill County, Montana, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Burckhardtite: Pb2(Fe+++,Mn+++)Te++++(AlSi3O10)O2(OH)2·(H2O) Moctezumite: Pb(UO2)(TeO3)2
Comments: Pink crusts of burckhardtite with yellow crystalline moctezumite on quartz. Location: Moctezuma Mine, Moctezuma, Sonora, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Burkeite: Na6(CO3)(SO4)2
Comments: Translucent to opaque vuggy mass of burkeite. Location: Searles Lake, San Bernardino County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Burpalite: Na2CaZrSi2O7F2
Comments: Yellow crystalline grains of burpalite. Location: Burpala, Transbaikal, Republic of Buryatia, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Butschliite: K2Ca(CO3)2
Comments: Slightly fibrous to granular massive butschliite. Location: Near Shavings Lake, Renfrew County, Ontario, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bystromite: MgSb2O6
Comments: Dark brown bystromite in quartz. Location: La Fortuna Mine, El Antimonio, Aqua Prieta, Sonora, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Bytownite: (Ca,Na)(Si,Al)4O8 Plagioclase: (Na,Ca)(Si,Al)4O8
Comments: Translucent crystalline bytownite. Location: Crystal Bay, Hennepin County, Minnesota, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cadmoselite: CdSe
Comments: Black cadmoselite grains in quartz. Location: Republic of Tuva, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species