Polished Marble Bar Chert MB125 striped Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 130 mm x 80 mm thick

IRR 131    Fossil stromatolite slab

280 mm x 150 mm  x 12 mm

Dimensions approximately 140 mm x 85 mm x 7 mm thick

Polished Marble Bar Chert MB125 striped Dimensions at widest points approximatelyMB125 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 185 mm x 150 mm x 70 mm thick. Weighs 3,631 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