PO118. 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 dolerite.
The clinozoisite has replaced but retained the shape of plagioclase feldspar crystals.
Tumble Polished mixed Australian gemstones MXT101
$35.00... Plus 10% GST in Australia
Starry Jasper SJ106
$95.00... Plus 10% GST in Australia
Polished Pilbara Agate PA230
Polished Lilac Mookaite MK281
$50.00... Plus 10% GST in Australia