Polished Marble Bar Chert MB109 beryl Lepidolite rough rock

Lepidolite rough rock

Weighs 631 grams

145 mm x 90 mm x 6

Dimensions at widest points approximately 140 mm  x 75 mm x 8

Dimensions at widest points approximately 60 mm x 50 mm x 38 mm thick

Polished Marble Bar Chert MB109 beryl Lepidolite rough rockMB109 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 140 mm x 60 mm x 45 mm thick. Weighs 718 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