Polished Porphyry . PO 122 Polished Beryl 170 mm x 100 mm

170 mm x 100 mm x 40 mm thick

Weighs 926 grams

Dimensions at widest points approximately 190 mm x 110 mm x 7 mm thick

Pollucite slab

From near Nullagine

Polished Porphyry . PO 122 Polished Beryl 170 mm x 100 mmPO122. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 290 mm x 165 mm x 10 mm thick. Weighs 898 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