Polished Magnesite slab. MAP179 polished slab From the Irregully Formation

From the Irregully Formation

Dimensions at widest points approximately 110 mm x 95 mm x 70 mm thick

Fossil stromatolite with natural rough back

Dimensions at widest points approximately 125 mm x 70 mm x 7 mm thick

Dimensions at widest points approximately 70 mm x 50 mm x 18 mm thick

Polished Magnesite slab. MAP179 polished slab From the Irregully FormationMAP179. 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 155 mm x 80 mm x 13 mm thick. Weighs 309 grams. From north of Kalgoorlie, Western Australia.