Polished De Grussa copper ore slab CO127 Green Opal Dimensions at widest points approximately

Dimensions at widest points approximately 100 mm x 100 mm x 40 mm thick

Kaolinite has unusual reddish hue in this piece

Dimensions at widest points approximately 150 mm x 130 mm x 8 mm thick

120 mm x 75 mm x 25 mm thick

Polished De Grussa copper ore slab CO127 Green Opal Dimensions at widest points approximatelyCO127 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 350 mm x 200 mm x 15 mm thick. Weighs: 2,042 grams A mix of copper minerals that formed in the upper oxidised zone. Consisting of dark green malachite, blue chrysocolla, tenorite, minor cuprite , native copper and brown iron oxides. The Degrussa underground mine is a high grade copper deposit in Western Australia that commenced operation in 2012 and ceased