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Weighs 213 grams
Weight 963 grams
From an unassigned unit of the Wyloo Group
Dimensions approximately 170 mm x 130 mm x 15 mm thick
BA117 Polished Brazilian Agate slab
Polished Magnesite specimen. MAP171 Green Opal Weighs 213 gramsMAP171. Magnesite (Lemon chrysoprase) rough rock, cut and polished on one side with a natural back. Chalcedony grading into silicated magnesite. Dimensions at widest points approximately 100 mm x 75 mm x 27 mm thick. Weighs 369 grams. The subtle lime green colouration is caused by the presence of nickel mineralisation. From Eucalyptus, north of Kalgoorlie , Western Australia.