Polished Magnesite slab. MAP182 Orbicular Granite OG176 Polished orbicular granite with

OG176   Polished orbicular granite with natural rough back

Weight :  432 grams

From the Ord Ranges

130 mm high  x 95 mm x 8

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

Polished Magnesite slab. MAP182 Orbicular Granite OG176 Polished orbicular granite withMAP182. Magnesite (Lemon chrysoprase) slab polished on one side. The subtle lime green colouration is caused by the presence of nickel mineralisation. Dimensions at widest points approximately 80 mm x 60 mm x 14 mm thick. Weighs 130 grams. From north of Kalgoorlie, Western Australia.