Polished Porphyry slab. PO 128 polished jasper 115 mm x 50 mm

115 mm x 50 mm x 15 mm thick at widest points

Weighs:  588 grams

Dimensions at widest points approximately 175 mm x 100 mm x 6 mm thick

GRN81  Green Opal & Magnesite rough rock

The "Carawine Dolomite" is a geological formation that occurs in numerous isolated areas in the eastern part of the Hamersley Basin in the Pilbara region of Western Australia

Polished Porphyry slab. PO 128 polished jasper 115 mm x 50 mmPO128. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 110 mm x 85 mm x 8. 4 mm thick. Weighs 213 grams. Porphyry is a general term that is used rather loosely for igneous rocks which contain relatively large isolated crystals set in a fine grained groundmass. The porphyry pictured here has pinkish coloured clinozoisite crystals set in a ground mass of dolerite. The