Polished Marble Bar Chert MB106 Wanong Dendritic Opal Face is approximately 110mm x

Face is approximately 110mm x 55mm and  20mm thick

130 mm x 70 mm  x 8 mm

Dimensions approximately 240 mm x 130 mm x 10 mm thick

100 mm x 80 mm x 35 mm thick

Polished Marble Bar Chert MB106 Wanong Dendritic Opal Face is approximately 110mm xMB106 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 160 mm x 120 mm x 45 mm thick. Weighs 1,607 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