Polished Bauxite BAU132 dendritic opal Dimensions at widest points approximately

Dimensions at widest points approximately 120 mm x 75 mm x 40 mm thick

NJ465  Noreena Jasper rough rock

Full round attached to host rock

Dimensions at widest points approximately 175 mm x 70 mm x 8 mm thick

MN142  Magneprase slab

Polished Bauxite BAU132 dendritic opal Dimensions at widest points approximatelyBAU132. Bauxite (laterite) rough rock, cut and polished on one side. Dimensions at widest points approximately 135 mm x 95 mm x 55 mm thick. Weighs 1,135 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.