Polished Marble Bar Chert MB109 rare From the Ord Ranges near

From the Ord Ranges near Port Hedland

Weighs 680 grams

Dimensions at widest points approximately 225 mm x  120 mm x 10 mm thick

Dimensions at widest points approximately 160 mm x 120 mm x 30 mm thick

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

Polished Marble Bar Chert MB109 rare From the Ord Ranges nearMB109 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