US$ 24.00
260 mm x 130 mm x 60 mm thick
IRR 131 Fossil stromatolite slab
135 mm x 110 mm x 10 mm thick and weighs 295 grams
115 mm x 95 mm x 8
South America
Polished Porphyry slab. PO 127 outback jasper 260 mm x 130 mmPO127. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 195 mm x 120 mm x 9. 4 mm thick. Weighs 469 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
US$ 24.00
US$ 25.00
US$ 80.00
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