Polished Porphyry . PO 118 polished prehnite It weigh 475 grams

It weigh 475 grams

Weighs 406 grams

Dimensions at widest points approximately 120 mm x 60 mm x 30 mm thick

From near Wiluna in Western Australia

120 mm x 70 mm x 45 mm thick

Polished Porphyry . PO 118 polished prehnite It weigh 475 gramsPO118. Pink porphyry slab, cut and polished on one side. From our mining claim at Mindoolah, Western Australia. Dimensions at widest points approximately 180 mm x 95 mm x 12 mm thick. Weighs 384 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