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Chert Breccia
form of Pseudogymnosolenid type
Dimensions at widest points approximately 190 mm x 175 mm and 70 mm thick
120 mm x 55 mm x 45 mm thick
Polished Marble Bar Chert MB118 crystoprase Chert BrecciaMB118 Marble Bar Chert. Cut and polished on one side with a rough, natural back and a cut base to stand as a display specimen ! Dimensions at widest points approximately 140 mm x 120 mm x 60 mm thick. Weighs 2,000 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
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