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OJ182 A rough rock
All reasonably uniform in size (roughly 15 - 20 mm diameter}
Tumble polished Brecciated Pink Opal from Mooka Creek
Dimensions at widest points approximately 125 mm x 50 mm x 50 mm thick
CC166 Chrome chalcedony rough rock
Polished De Grussa copper ore slab CO118 Green Opal OJ182 A rough rockCO118 DeGrussa copper ore slab, polished on one side. Dimensions at widest points approximately 300 mm x 240 mm x 18 mm thick. Weighs: 2,718 grams A mix of copper minerals that formed in the upper oxidised zone. Fractured quartz vein infilled with iron oxides and chrysocolla. The Degrussa underground mine is a high grade copper deposit in Western Australia that commenced operation in 2012 and ceased mining in 2022.