Polished Marble Bar Chert MB104 rock blocks CW122 Chinese Writing Stone rough

CW122   Chinese Writing Stone rough rock

100 mm x 60 mm x 30 mm

It weighs 300 grams

Dimensions at widest points approximately 110 mm x 110 mm x 90 mm thick

MN136  Magneprase rough rock

Polished Marble Bar Chert MB104 rock blocks CW122 Chinese Writing Stone roughMB104 Marble Bar Chert. Cut and polished on one side with a rough, natural back and a cut base to stand as a display specimen ! Dimensions at widest points approximately 140 mm x 70 mm x 40 mm thick. Weighs 850 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