Polished De Grussa copper ore slab CO107 outback jasper McGrath Formation" which has an

McGrath Formation" which has an age of close to 2 billion years

5 mm thick at widest points

CH468  Chrysoprase rough rock

DO206  Dendritic Opal slab

Weight is 151 grams

Polished De Grussa copper ore slab CO107 outback jasper McGrath Formation" which has anCO107 DeGrussa copper ore slab, polished on one side. A mix of copper minerals that formed in the upper oxidised zone. This piece has a lot of native copper ! Dimensions at widest points approximately 80 mm x 70 mm x 8 mm thick. Weighs: 145 grams A mix of copper minerals that formed in the upper oxidised zone. The Degrussa underground mine is a high grade copper deposit in Western Australia that commenced operation in 2012 and ceased mining in 2022.