Polished Marble Bar Chert MB118 dup-review-publication Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 120 mm x 9

Dimensions approximately 175 mm x 105 mm x 100 mm thick

Convoluted Jasper rough rock

BM303  Brecciated  Mookaite slab

The darker pink areas are chalcedony surrounded by lighter coloured opal

Polished Marble Bar Chert MB118 dup-review-publication Dimensions at widest points approximatelyMB118 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 140 mm x 120 mm x 60 mm thick. Weighs 2,000 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