20hhgd.is ((ETTRINGITE, CALCITE)), $30 MINIMUM BID, N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa, 4.5 x 4 x 1 cm, Miniature | |
Terminated bright yellow lustrous Ettringite crystals with lustrous Calcite scalenahedral crystals. Photos did not come out very sharp. ex Glenn Davidson collection. |