Polished Porphyry PO 129 Rough rock CC155 Chrome chalcedony slab

CC155  Chrome chalcedony slab

Dimensions at widest points approximately 225 mm x 120 mm x 65 mm thick

The interesting cylindrical cavity on the right hand side is all that remains of a fossil belemnite which was a squid-like creature with a tapering torpedo or bullet shaped body

BM294  Brecciated  Mookaite slab

Each piece approximately  4 - 5

Polished Porphyry PO 129 Rough rock CC155 Chrome chalcedony slabPO129. Pink porphyry rock, cut and polished on one side with a rough, natural back and a cut base to sit as a display specimen. From Mindoolah, Western Australia. Dimensions at widest points approximately 110 mm x 90 mm x 45 mm thick. Weighs 620 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