Polished Marble Bar Chert slab MB130 Chrome chalcedony Dimensions at widest points approximately

Dimensions at widest points approximately 215 mm x 130 mm x 55 mm thick

Weighs 690 grams

Dimensions at widest points approximately 180 mm  x 110 mm x 9 mm thick

150 mm x 150 mm  x 14 mm thick

240 mm high x 110 mm wide x 80 mm

Polished Marble Bar Chert slab MB130 Chrome chalcedony Dimensions at widest points approximatelyMB130 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 200 mm x 120 mm x 9 mm thick. Weighs 406 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