Polished Marble Bar Chert MB119 chalcedony From the Jeerinah Formation in

From the Jeerinah Formation in the Hamersley Ranges

Weighs 152 grams

Weighs  201 grams

Dimensions at widest points approximately 90 mm x 55 mm x 40 mm thick

Dimensions at widest points approximately 225 mm high x 110 mm  x 110 mm thick

Polished Marble Bar Chert MB119 chalcedony From the Jeerinah Formation inMB119 Marble Bar Chert. Cut and polished on one side with a rough, natural back and a cut base to stand as a display specimen ! Dimensions at widest points approximately 220 mm x 145 mm x 70 mm thick. Weighs 3,919 grams. Marble Bar chert is a finely banded, iron rich silica rock from the Marble Bar Chert Member (Warrawoona Group) of Western Australia. Formed in shallow Archean seas, it dates to the Paleoarchean (~3. 46 billion years old), making it