Polished Magnesite specimen. MAP188 black conglomerate Dimensions approximately 180 mm x

Dimensions approximately 180 mm x 100 mm x 5 mm thick

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

near Port Hedland

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

Weighs 675 grams

Polished Magnesite specimen. MAP188 black conglomerate Dimensions approximately 180 mm xMAP188. 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.