Polished Lime Magnesite specimen. MAP191 polished prehnite Dimensions at widest points approximately

Dimensions at widest points approximately 135 mm x 50 mm x 50 mm thick

Weighs 622 grams

KA130  Kumarina Agate

It weighs 182 grams

The matrix that this copper based mineral forms on is kaolinite

Polished Lime Magnesite specimen. MAP191 polished prehnite Dimensions at widest points approximatelyMAP191. Magnesite (Lemon chrysoprase) rough rock, cut and polished on one side with a natural back. Half of a complete nodule with intense colouration ! Dimensions at widest points approximately 115 mm x 105 mm x 90 mm thick. Weighs 1,735 grams. The subtle lime green colouration is caused by the presence of nickel mineralisation. From Yerilla, north of Kalgoorlie , Western Australia.