Polished De Grussa copper ore slab CO129 polished prehnite Dimensions approximately 140 mm x

Dimensions approximately 140 mm x 85 mm x 7 mm thick

NJ443   Noreena Jasper slab

Dimensions at widest points approximately 150 mm x 30 mm x 7

Very unusual piece

Dimensions at widest points approximately 200 mm x 110 mm x 6

Polished De Grussa copper ore slab CO129 polished prehnite Dimensions approximately 140 mm xCO129 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 250 mm x 230 mm x 14 mm thick. Weighs: 1,779 grams A mix of copper minerals that formed in the upper oxidised zone. Consisting of dark green malachite, tenorite, cuprite, chrysocolla, 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 mining in