Polished Porphyry slab. PO 128 Marra Mamba Total weight 1

Total weight 1

240 mm high x 125 mm wide x 60 mm

150 mm x 60 mm  x 8 mm

Dimensions at widest points approximately 180 mm x 125 mm x 11 mm thick

Dimensions at widest points approximately 210 mm  x 80 mm x 6 mm thick

Polished Porphyry slab. PO 128 Marra Mamba Total weight 1PO128. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 110 mm x 85 mm x 8. 4 mm thick. Weighs 213 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