Polished Porphyry slab. PO 130 Kumarina Agate Weighs 140 grams

Weighs 140 grams

POP187   Brecciated Pink Opal rough rock

Dimensions at widest points approximately 150 mm x 80 mm and 6

BM315  Brecciated  Mookaite slab

DOT101  Tumble polished Dendritic Opal

Polished Porphyry slab. PO 130 Kumarina Agate Weighs 140 gramsPO130. Pink porphyry slab, cut and polished on one side. From Mindoolah, Western Australia. Dimensions at widest points approximately 270 mm x 150 mm x 8 mm thick. Weighs 711 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