Polished Marble Bar Chert MB103 mookalite Dimensions at widest points approximately

Dimensions at widest points approximately 225 mm x 85 mm x 65 mm thick

170 mm x 70 mm x 7

200 mm x 135 mm x 85 mm

A mix of copper minerals that formed in the upper oxidised zone

145 mm x 65 mm x 7 mm thick

Polished Marble Bar Chert MB103 mookalite Dimensions at widest points approximatelyMB103 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 160 mm x 100 mm x 75 mm thick. Weighs 1,205 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