Polished Marble Bar Chert slab MB123 mookatite 205 mm x 120 mm

205 mm x 120 mm  x 10 mm

Weight   706 grams

115 mm x 60 mm  x 8 mm

Dimensions at widest points approximately 130 mm x 100 mm x 9

Polished Marble Bar Chert slab MB123 mookatite 205 mm x 120 mmMB123 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 140 mm x 100 mm x 8. 5 mm thick. Weighs 279 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