Polished Porphyry . PO 118 polished prehnite Dimensions approximately 165 mm x

Dimensions approximately 165 mm x 60 mm x 8 mm thick

From near Wiluna in Western Australia

190 mm x 90 mm x 10 mm thick

Gaspeite slab

WAT103  Tumble polished Wyloo Agate

Polished Porphyry . PO 118 polished prehnite Dimensions approximately 165 mm xPO118. Pink porphyry slab, cut and polished on one side. From our mining claim at Mindoolah, Western Australia. Dimensions at widest points approximately 180 mm x 95 mm x 12 mm thick. Weighs 384 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