Polished Green Opal rock GRN103 alcheringa narrina From our mining claim at

From our mining claim at Mooka Creek close to the Kennedy Ranges

Dimensions approximately 65mm x 60mm x 9mm thick

Tumble polished Pink Opal from Mooka Creek

Weighs 875 grams

It does occur in the same geological "Marra Mamba Iron Formation"

Polished Green Opal rock GRN103 alcheringa narrina From our mining claim atGRN103 Green Opal & Magnesite rough rock, cut and polished on one side with a rough, naturally weathered back Dimensions at widest points approximately 170 mm x 70 mm x 80 mm thick Weighs 763 grams Green Opal occurs at a location south of Kalgoorlie in the Eastern Goldfields of Western Australia. The green colouration is caused by traces of nickel and or chromium. Sometimes it exhibits striking contrasting veins of magnesite.