20hhgd.is ((ETTRINGITE, HAUSMANNITE,)), $30 MINIMUM BID, N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa, 2 x 2 x 1.8 cm, Thumbnail | |
Yellow Ettringite crystals with small black lustrous Hausmannite crystals and colorless Calcite crystals. ex Glenn Davidson. ex Maria Thaler & Reinhold Bacher collecion. |