Polished Lime Magnesite specimen. MAP208 purple chalcedony The interesting cylindrical cavities are

The interesting cylindrical cavities are all that remain of fossil belemnites which were a squid-like creature with a tapering torpedo or bullet shaped body

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It weighs 291 grams

POP178   Pink Opal slab

Dimensions approximately 155 mm x 50 mm x 8 mm thick

Polished Lime Magnesite specimen. MAP208 purple chalcedony The interesting cylindrical cavities areMAP208. 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 165 mm x 100 mm x 80 mm thick. Weighs 1,492 grams. The subtle lime green colouration is caused by the presence of nickel mineralisation. From north of Kalgoorlie , Western Australia.