Polished Porphyry slab. PO 128 snakeskin jasper Dimensions at widest points approximately

Dimensions at widest points approximately 100 mm x 90 mm x 70 mm thick

RH251  A slab

5 mm thick and weighs 124 grams

From near Yalgoo in Western Australia

Weight :  360 grams

Polished Porphyry slab. PO 128 snakeskin jasper Dimensions at widest points approximatelyPO128. 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