20hhgd.is ((BORNITE, CALCITE)), $40 MINIMUM BID, Dzhezkazgan mining district, Karaganda Region, Kazakhstan, 7.5 x 7 x 2.5 cm, Cabinet | |
4 Bornite crystals to 1 cm on a matrix of Calcite peppered with very small Marcasite or Chalcopyrite from Kazakhstan. ex Glenn Davidson collection. |