Polished Marble Bar Chert MB115 polished jasper 115 mm x 20 mm

115 mm x 20 mm x  30 mm

CO122  DeGrussa copper ore slab

Dimensions at widest points are approximately 80 mm x 70 mm x 35 mm

Dimensions at widest points approximately 155 mm x 55 mm x 11 mm thick

Age is over 3 billion years

Polished Marble Bar Chert MB115 polished jasper 115 mm x 20 mmMB115 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 150 mm x 110 mm x 50 mm thick. Weighs 1,151 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