Mineral: | Olmiite / Bultfonteinita
| Fórmula química: | CaMn2+[SiO3(OH)](OH) / Ca2[F|HSiO4] | Tamaño: | | Peso: | | Transparencia: | translúcido - transparente | Número de piezas: | | Origen: | Mine de N'Chwaning II, Minas N'Chwaning, Kuruman, los campos el manganeso de Kalahari, la provincia del Cabo de norte , Sudáfrica | 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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