Bultfonteinite Mineral Gallery

Bultfonteinite Mineral Gallery
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Hudson Institute of Mineralogy

Bultfonteinite Minerals

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Bultfonteinite Mineral Gallery With 3 Images

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Bultfonteinite: Ca2SiO2(OH,F)4

Comments: Rounded, spherical aggregation of acicular bultfonteinite crystals.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 8.5 x 4.6 cm.
© John Veevaert

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Bultfonteinite: Ca2SiO2(OH,F)4  
Oyelite: Ca10B2Si8O29·12(H2O)

Comments: White encrustation of oyelite covering brownish botryoidal bultfonteinite.
Location: N'Chwaning Mine, Kalahari Manganese Field, Northern Cape Province, South Africa. Scale: 2 x 4 cm.
© John Veevaert

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Bultfonteinite: Ca2SiO2(OH,F)4  
Poldervaartite: (Ca,Mn++)2SiO3(OH)2

Comments: Bow-tie clusters of white, acicular bultfonteinite and blocky, beige-colored poldervaartite on matrix.
Location: N'Chwaning mine, South Africa. Scale: picture size 4 cm.
© John Veevaert
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