Polished Marble Bar Chert MB110 chrysophase B223 Black Jasper Conglomerate slab

B223  Black Jasper Conglomerate slab

MC117 Marillana Conglomerate rough rock

Dimensions at widest points approximately 110 mm x 65 mm x 30 mm thick

115 mm x 70 mm  x 98 mm

Polished Marble Bar Chert MB110 chrysophase B223 Black Jasper Conglomerate slabMB110 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 110 mm x 55 mm x 45 mm thick. Weighs 339 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