Polished Porphyry . PO 123 dolomite 165mm x 75mm x 9mm

165mm x 75mm x 9mm thick

Dimensions at widest points approximately 375 mm x 240 mm x 15

140 mm x 125 mm x 40 mm thick

Beautiful full round with highly visible annular rings

Huge museum quality display piece

Polished Porphyry . PO 123 dolomite 165mm x 75mm x 9mmPO123. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 140 mm x 80 mm x 8. 5 mm thick. Weighs 188 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