Polished Marble Bar Chert MB120 rock block Weighs 516 grams

Weighs 516 grams

cut and polished on one side with a natural back and a cut base to sit as a display specimen

150 mm x 105 mm x 12 mm thick

The pink and red colouration can be attributed to the presence of finely disseminated iron oxides

Polished Marble Bar Chert MB120 rock block Weighs 516 gramsMB120 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 130 mm x 60 mm x 50 mm thick. Weighs 490 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