Polished Marble Bar Chert MB107 Nickeloan magnesite Weighs 132 grams

Weighs 132 grams

125 mm x 80 mm x 70 mm

most commonly the green chromiferous muscovite mica

Weighs 670 grams

Dimensions at widest points approximately 125 mm x 70 mm x 7 mm thick

Polished Marble Bar Chert MB107 Nickeloan magnesite Weighs 132 gramsMB107 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