Polished Porphyry . PO 120
Regular price
$40.00
Plus 10% GST in Australia
PO120. Pink porphyry slab, cut and polished on one side.
From our mining claim at Mindoolah, Western Australia.
Dimensions at widest points approximately 195 mm x 85 mm x 9 mm thick.
Weighs 346 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 clinozoisite has replaced but retained the shape of plagioclase feldspar crystals.
