Polished Marble Bar Chert MB106 outback jasper BJ118 Polished "Black Jade" A

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

Dimensions at widest points approximately 115 mm x 100 mm

Dimensions at widest points approximately 160 mm x 90 mm x 60 mm thick

Weighs 572 grams

Fossil stromatolite slab polished on one side

Polished Marble Bar Chert MB106 outback jasper BJ118 Polished "Black Jade" AMB106 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