Polished Porphyry slab. PO 128 snakeskin jasper 50 mm x 50 mm

50 mm x 50 mm  x 30 mm

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

Diameter approx

Weighs 380 grams

5 mm thick and weighs 124 grams

Polished Porphyry slab. PO 128 snakeskin jasper 50 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