US$ 153.00
From near Newman
It weighs 546 grams
It weighs 10
Dimensions at widest points approximately 180 mm x 125 mm x 11 mm thick
GREEN76 Green Opal & Magnesite rough rock
Polished Porphyry . PO 122 alcheringa narrina From near NewmanPO122. 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
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