Polished Marble Bar Chert MB125 striped IRR 131 Fossil stromatolite slab

IRR 131    Fossil stromatolite slab

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

The interesting cylindrical cavity is all that remains of a fossil belemnite which was a squid-like creature with a tapering torpedo or bullet shaped body

Displaying purple lepidolite associated with white feldspar and quartz

Polished Marble Bar Chert MB125 striped IRR 131 Fossil stromatolite slabMB125 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