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Barylite: BaBe2Si2O7
Comments: Blocky prisimatic clear crystals of barylite with black aegirine. Location: Mt. Malosa, Zomba plateau Malawi. Scale: 2 x 1.6 x 1.3 cm. © Fabre Minerals
Beryl: Be3Al2Si6O18
Comments: Transparent Goshenite, the colorless variety of beryl with orthoclase and muscovite. Location: Pingwu, Sichuan, China. Scale: 9 x 8.5 cm. © Fabre Minerals
Beryl: Be3Al2Si6O18 Calcite: CaCO3
Comments: Transparent emerald, the green variety of beryl on calcite (marble) matrix. Location: Coscuez, Boyacá, Colombia. Scale: 2.5 x 2.5 cm. © Fabre Minerals
Betekhtinite: Cu10(Fe,Pb)S6
Comments: Black crystalline aggregate of betekhtinite with white calcite. Location: Twin Pocket, Mine #57, Dzhezkazgan, Kazakhstan. Scale: 9.5 x 7.5 cm. © Fabre Minerals
Bismuth: Bi
Comments: Coarsely crystalline bismuth. Location: Biggenden, Queensland, Australia. Scale: 2.9 x 1.8 x 2.8 cm. © Fabre Minerals
Bismuthinite: Bi2S3
Comments: Metallic, prismatic bismuthinite crystal topped with botryoidal marcasite. Location: Veta Farellón viejo, Tazna, Potosí, Bolivia. Scale: 4.4x1.3x0.4 cm. © Fabre Minerals
Botallackite: Cu2Cl(OH)3
Comments: Well crystallized (although the crystals are small) botallackite on matrix. Location: A European classic from the type locality, Botallack mine, St Just, England. Scale: 5 x 4 cm. © Fabre Minerals
Bournonite: PbCuSbS3
Comments: Bright, blocky crystalline aggregate of steel gray bournonite crystals. Location: Yao-gan-xian mine, Hunan China. Scale: Picture size 2 cm. © Fabre Minerals
Brazilianite: NaAl3(PO4)2(OH)4
Comments: Gemmy brazilianite crystal. Location: Marcel Telirio mine, Divino das Laranjeiras, Minas Gerais, Brazil. Scale: Size Not Given. © Fabre Minerals
Brochantite: Cu4(SO4)(OH)6 Linarite: PbCu(SO4)(OH)2
Comments: Deep blue, acicular, linarite with light blue, globular brochantite on white quartz. Location: Goulmina, Er Rachidia, Morroco. Scale: Crystal size 1.5 cm. © Fabre Minerals
Brookite: TiO2
Comments: Brookite crystal group on matrix. During the 19th century this site produced some of the best brookite ever seen. Location: Classic Welsh locality of Prenteg, Gwynedd, Wales, UK. Scale: 4 x 4.5 cm. © Fabre Minerals
Calcite: CaCO3 Beryl: Be3Al2Si6O18
Cassiterite: SnO2
Comments: Very brilliant black crystals of cassiterite on white mica. Location: Xue Bao Diang, Sichuan, China. Scale: Size Not Given. © Fabre Minerals
Comments: Gemmy, doubly terminated cassiterite on quartz-mica matrix. Location: Langcangjiang river area, Yunnan, China. Scale: 2.7 x 2.2 x 1.8 cm. © Fabre Minerals
Cerussite: PbCO3 Hydrocerussite: Pb3(CO3)2(OH)2
Comments: Platy crystals of milky white hydrocerussite covering cerussite. Location: Tsumeb mine, Tsumeb, Namibia. Scale: 6 x 5 cm. © Fabre Minerals
Chabazite-Ca: (Ca0.5,Na,K)4[Al4Si8O24]·12H2O
Comments: Pinkish orange colored chabazite-Ca displaying a blocky, near-cubic form of triclinic crystals. Location: Imilchil, Anti-Atlas Morocco. Scale: 4.2 x 3.7 x 1.6 cm. © Fabre Minerals
Chalcopyrite: CuFeS2 Quartz: SiO2
Comments: Well-formed crystals of chalcopyrite and quartz. Location: Boldut mine, 61 level (350 meters deep), Cavnic, Maramures, Rumania. Scale: 5.5 x 3.5 cm. © Fabre Minerals
Chalcostibite: CuSbS2
Comments: Dark gray crystals of chalcostibite on white quartz matrix. Location: Boldut mine, Cavnic Maramures, Rumania. Scale: 7 x 7 x 3.5 cm. © Fabre Minerals
Chrysocolla: (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Comments: Botryoidal chrysocolla lining a vug. Location: Inca del Oro, Copiapó, Chile. Scale: 7.5 x 6 cm. © Fabre Minerals
Chrysocolla: (Cu,Al)2H2Si2O5(OH)4·n(H2O) Cuprite: Cu2O
Comments: Semi-metallic, dark reddish gray, cuprite crystals on blue chrysocolla. Location: Mashamba West mine, Shaba, Congo. Scale: 7.5 x 4.7 x 2.3 cm. © Fabre Minerals