Polished Marble Bar Chert slab MB111 Brecciated Mookaite 180 mm x 90 mm

180 mm x 90 mm x 13 mm thick

Dimensions at widest points approximately 90 mm x 50 mm x 35 mm thick

Dimensions approximately 95 mm x 70 mm x 8 mm thick

Displays excellent cross section of circular columns

Polished Marble Bar Chert slab MB111 Brecciated Mookaite 180 mm x 90 mmMB111 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 135 mm x 120 mm x 9. 5 mm thick. Weighs 369 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