Polished Marble Bar Chert MB109 rare Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 80 mm x 45 mm thick

It weighs 816 grams

Dimensions approximately 100 mm x 40 mm x 8 mm thick

Weighs 398 grams

Polished Marble Bar Chert MB109 rare Dimensions at widest points approximatelyMB109 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 140 mm x 60 mm x 45 mm thick. Weighs 718 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