Polished Marble Bar Chert MB103 mookalite 145 mm x 65 mm

145 mm x 65 mm x 7 mm thick

Smoky Quartz crystal cluster from Wyloo

Approximate dimensions at widest points 75 mm  x 55 mm  x 40 mm thick

Weighs 376 grams

Polished Marble Bar Chert MB103 mookalite 145 mm x 65 mmMB103 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 160 mm x 100 mm x 75 mm thick. Weighs 1,205 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