Polished De Grussa copper ore slab CO137 Marramamba Dimensions at widest points approximately

Dimensions at widest points approximately 250 mm x 95 mm x 13 mm thick

most likely grunerite

Dimensions at widest points approximately 120 mm x 120 mm and 6

SPF129   Fossil stromatolite

From near Nevada Creek

Polished De Grussa copper ore slab CO137 Marramamba Dimensions at widest points approximatelyCO137 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 140 mm x 90 mm x 10. 5 mm thick. Weighs: 287 grams A mix of copper minerals that formed in the upper oxidised zone. Consisting of blue chrysocolla, minor green malachite, tenorite, 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 2022.