Polished Marble Bar Chert MB103 mookalite Dimensions approximately 120 mm x

Dimensions approximately 120 mm x 120 mm x 80 mm thick

145 mm x 65 mm x 7 mm thick

150 mm x 90 mm x 6

Weighs 376 grams

Approximate dimensions at widest points 75 mm  x 55 mm  x 40 mm thick

Polished Marble Bar Chert MB103 mookalite Dimensions approximately 120 mm xMB103 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