Polished Bauxite BAU137 purple chalcedony Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 100 mm x 870 mm thick

105 mm x 80 mm x 45 mm thick

Dimensions approximately 120 mm x 70 mm x 8 mm thick

Weighs 83 grams

150 mm x 50 mm  x 8

Polished Bauxite BAU137 purple chalcedony Dimensions at widest points approximatelyBAU137. Bauxite (laterite) rough rock, cut and polished on one side. Dimensions at widest points approximately 120 mm x 95 mm x 65 mm thick. Weighs 868 grams. Bauxite is the main raw material used in the commercial production of aluminium. Large reserves of this stone occur in Western Australia. This specimen is from east of the Darling Ranges just outside the city of Perth.