Polished Marble Bar Chert MB107 purple chalcedony From our mining lease near

From our mining lease near Newman

It weighs 834 grams

Dimensions at widest points approximately 95 mm x 85 mm x 7 mm thick

Dimensions at widest points approximately 160 mm x 135 mm x 18 mm thick

Dimensions at widest points approximately 70 mm x 50 mm x 27 mm thick

Polished Marble Bar Chert MB107 purple chalcedony From our mining lease nearMB107 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 105 mm x 60 mm x 50 mm thick. Weighs 520 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 one of the Earths oldest well preserved sedimentary