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Bornite: Cu5FeS4
Comments: Metallic, crystalline bornite crystal with bluish tarnish. Location: Kamoto mine, Kolwezi, Shaba, Dem. Repub. Congo. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Brandtite: Ca2(Mn,Mg)(AsO4)2·2(H2O)
Comments: Clear, crystalline brandtite aggregates. Location: Harstig mine, Pajsberg, Varmland, Sweden. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Brannockite: KSn2Li3Si12O30
Comments: Clear, hexagonal plates of brannockite crystals. Location: Foote mine, Kings Mountain, Cleveland County, North Carolina, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Bravoite: (Fe,Ni,Co)S2
Comments: Steel gray, metallic crystal of bravoite on brassy yellow chalcopyrite. Location: Gey, Rhineland-Palatinate, Germany. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Breithauptite: NiSb
Comments: Three brownish, metallic hexagonal prisms of breithauptite in calcite. Location: Sarrabus, Sardinia, Italy. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Brochantite: Cu4(SO4)(OH)6
Comments: Blue green spray of acicular brochantite crystals on matrix. Location: Douglas Hill, Lidwig, Lyon County, Nevada, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Bromargyrite: AgBr
Comments: Butterscotch colored bromargyrite cube. Location: Broken Hill, New South Wales, Australia. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Butlerite: Fe+++(SO4)(OH)·2(H2O)
Comments: Orange butlerite crystals. Location: United Verde mine, Jerome, Yavapai County, Arizona, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Cahnite: Ca2B(AsO4)(OH)4
Comments: White, translucent cahnite crystal on hodgkinsonite. Location: Franklin, Sussex County, New Jersey, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Calaverite: AuTe2
Comments: Quartz matrix with abundant calaverite crystals. Location: Cripple Creek, Teller County, Colorado, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Caledonite: Pb5Cu2(CO3)(SO4)3(OH)6
Comments: Transparent, blue caledonite crystals. Location: Mammoth mine, Tiger, Pinal County, Arizona, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Cancrinite: Na6Ca2Al6Si6O24(CO3)2
Comments: Milky white, translucent fan-shaped sprays of cancrinite crystals. Location: Point of Rocks Mesa, Colfax County, New Mexico, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Carbonate-fluorapatite: Ca5(PO4,CO3)3F Apatite: Ca5(PO4)3(OH,F,Cl)
Comments: Pink, colliform carbonate-fluorapatite on matrix. Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Carbonate-hydroxylapatite: Ca5(PO4,CO3)3(OH) Robertsite: Ca6Mn+++9(PO4)9O6(H2O)6·3(H2O) Apatite: Ca5(PO4)3(OH,F,Cl)
Comments: Black crystals of Robertsite on pink carbonate-hydroxylapatite. Location: Tip Top mine, Custer, Custer County, South Dakota, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Carminite: PbFe+++2(AsO4)2(OH)2
Comments: Brownish red carminite crystals in matrix. Location: San Rafael mine, Gabbs, Nye County, Nevada, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Carnotite: K2(UO2)2V2O8·3(H2O)
Comments: Bright yellow, fluorescent crystals of carnotite on sandstone. Location: Anderson Mine, Yavapai County, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Caryopilite: (Mn++,Mg,Zn,Fe++)3(Si,As)2O510(OH,Cl)4
Comments: Small white balls of caryopilite next to larger barite crystals. Location: Langban, Varmland, Sweden. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Ceruleite: Cu2Al7(AsO4)4(OH)13·12(H2O)
Comments: Blue globular clusters of ceruleite. Location: Wheal Gorland, Gwennap, Cornwall, England. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Chabazite-Ca: (Ca0.5,Na,K)4[Al4Si8O24]·12H2O
Comments: Colorless hexagonal plates of chabazite. Location: Boral quarry, Bundoora, Victoria, Australia. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Chabazite-Na: (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) Herschelite: (Na,Ca,K)AlSi2O6·3(H2O)
Comments: Rounded transparent crystals of chabazite-Na (herschelite). Location: Horseshoe Dam, Maricopa County, Arizona, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals