Polished Marble Bar Chert slab MB101 mookarite 100 mm x 170 mm

100 mm x 170 mm x 30 mm thick

Weight is 480 grams

Dimensions at widest points approximately 80 mm x 90 mm x 6 mm thick

Dimensions at widest points approximately 180 mm x 95 mm x 60 mm thick

Polished Marble Bar Chert slab MB101 mookarite 100 mm x 170 mmMB101 Marble Bar Chert slab, polished on one side. Dimensions at widest points approximately 130 mm x 60 mm x 9. 8 mm thick. Weighs 170 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 rocks. From near the town of