Polished Porphyry . PO 123 Polished slab. It can be somewhat crumbly

It can be somewhat crumbly when cutting

From an unassigned unit of the Wyloo Group

Large reserves of this stone occur in Western Australia

210 mm x 120 mm x 60 mm thick

Dimensions at widest points approximately 370 mm x 110  mm with slightly tapering thickness of 11 - 14 mm

Polished Porphyry . PO 123 Polished slab. It can be somewhat crumblyPO123. 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