Polished Marble Bar Chert MB106 outback jasper 80 mm x 65 mm

80 mm x 65 mm  x 20 mm

Dimensions at widest points approximately 115 mm x 100 mm

Weighs 771 grams

BJ118  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Polished Marble Bar Chert MB106 outback jasper 80 mm x 65 mmMB106 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