Polished Bauxite BAU137 purple chalcedony chalcedony and magnesite in the

chalcedony and magnesite in the one piece

Weighs 83 grams

Dimensions at widest points approximately 210 mm x 125 mm x 11  mm thick

Dimensions approximately 120 mm x 70 mm x 8 mm thick

Dimensions at widest points approximately 100 mm x 70 mm x 65 mm thick

Polished Bauxite BAU137 purple chalcedony chalcedony and magnesite in theBAU137. 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.