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Duotone terrace — saffron brief on the left, garden-folded ledger on the right.
Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation
Tumble polished Magneprase
Weighs 207 grams
Dimensions at widest points approximately 75 mm x 50 mm x 28 mm thick
Dimensions approximately 65 mm x 60 mm x 25 mm thick
Polished Marble Bar Chert MB110 Rough rock Alcheringa narrina from the ArchaeanMB110 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 110 mm x 55 mm x 45 mm thick. Weighs 339 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