Polished Lime Magnesite specimen. MAP219 chatoyance PU152 Purple Chalcedony rough rock

PU152  Purple Chalcedony rough rock

Dimensions approximately 60 mm x 50 mm x 40 mm deep

Weighs 345 grams

A mix of copper minerals that formed in the upper oxidised zone

All reasonably uniform in size (roughly 20 - 30 mm diameter}

Polished Lime Magnesite specimen. MAP219 chatoyance PU152 Purple Chalcedony rough rockMAP219. Magnesite (Lemon chrysoprase) rough rock, cut and polished on one side with a natural back. Half of a complete nodule ! Dimensions at widest points approximately 120 mm x 95 mm x 50 mm thick. Weighs 726 grams. The subtle lime green colouration is caused by the presence of nickel mineralisation. From north of Kalgoorlie , Western Australia.