Polished Marble Bar Chert slab MB131 black jasper Dimensions at widest points approximately

Dimensions at widest points approximately 130 mm x 85 mm x 75 mm thick

Weighs 633 grams

Weight 583 grams

B220  Black Jasper Conglomerate slab

PA293  Pilbara Agate

Polished Marble Bar Chert slab MB131 black jasper Dimensions at widest points approximatelyMB131 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 110 mm x 85 mm x 8 mm thick. Weighs 179 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