Polished Marble Bar Chert MB109 rare Dimensions at widest points approximately

Dimensions at widest points approximately 135 mm x 110 mm x 10 mm  thick

It weighs 957 grams

145 mm x 145 mm  x 9 mm

OG209   A matching pair of polished Orbicular Granite halves with natural rough backs

Associated with Chrysoprase

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