Polished Magnesite specimen. MAP188 black conglomerate Dimensions at widest points approximately

Dimensions at widest points approximately 105 mm x 60 mm x 40 mm thick

(Porphyritic basalt)

Dimensions at widest points approximately 370 mm x 110  mm with slightly tapering thickness of 11 - 14 mm

Dimensions at widest points approximately 170 mm x 140 mm x 65 mm thick

near Port Hedland

Polished Magnesite specimen. MAP188 black conglomerate Dimensions at widest points approximatelyMAP188. Magnesite (Lemon chrysoprase) rough rock, cut and polished on one side with a natural back. Dimensions at widest points approximately 120 mm x 50 mm x 60 mm thick. Weighs 840 grams. Thick enough to cut more slices or leave intact as a display specimen ! The subtle lime green colouration is caused by the presence of nickel mineralisation. From north of Kalgoorlie , Western Australia.