Polished Marble Bar Chert MB120 epidote Approximate dimensions at widest points

Approximate dimensions at widest points 80 mm  x 80 mm  x 50 mm thick

Chert Breccia thick slab

Weight is 326 grams

CW130   Chinese Writing Stone slab

It weigh 295 grams

Polished Marble Bar Chert MB120 epidote Approximate dimensions at widest pointsMB120 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