Mineral: | Olmiite / Bultfonteinite
| Chemical Formula: | CaMn2+[SiO3(OH)](OH) / Ca2[F|HSiO4] | Size: | | Weight: | | Transparence: | translucent - transparent | Quantity: | | Origin: | N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa | Here you get a rare mineral which was officially recognized as mineral in 2006: A botryoidal olmiite crystal. Beside the olmiite, small needlelike bultfonteinite crystals are attached. Great fully intact specimen with great luster and fine translucency from South Africa.
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