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marshmallow stone

Polished Porphyry . PO 122

$95.00 Plus 10% GST in Australia
Sorry, we are closed until late February while we attend the gem shows in USA. Email if you need further information: glenn@outbackmining.com

PO122.  Pink porphyry slab, cut and polished  on one side.

From Mindoolah, Western Australia.

Dimensions at widest points approximately 290 mm x 165 mm x 10 mm thick.

Weighs 898 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.

 

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