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N'Chwaning II mine, Kuruman, South Africa
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Bultfonteinite and Poldervaartite, N'Chwaning II mine, Kuruman, South Africa. Specimen 4.5x3x3cm covered on both sides with crystals of poldervaartite, a calcium hydroxy silicate with yellow crystals, and white tufts of bultfonteinite, a calcium fluoro silicate. Excellent for macro photography.