Polished Marble Bar Chert MB120 rock block Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 95 mm x 8 mm  thick

RH288  A slab

The pink and red colouration can be attributed to the presence of finely disseminated iron oxides

EPI74   Epidote

cut and polished on one side with a natural back and a cut base to sit as a display specimen

Polished Marble Bar Chert MB120 rock block Dimensions at widest points approximatelyMB120 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 130 mm x 60 mm x 50 mm thick. Weighs 490 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 one of the Earths oldest well preserved sedimentary