Polished Marble Bar Chert MB115 ashburton agate Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm x 110 mm x 10 mm thick

OJ184  A slab

EU112  Eucryptite rough rock

MK456   Mookaite

Weighs 263 grams

Polished Marble Bar Chert MB115 ashburton agate Dimensions at widest points approximatelyMB115 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