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McGrath Formation" which has an age of close to 2 billion years
Weight is 151 grams
Dimensions at widest points approximately 165 mm x 130 mm x 80 mm thick
CH468 Chrysoprase rough rock
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.
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