Polished Marble Bar Chert MB110 Polished slab. Dimensions at widest points approximately

Dimensions at widest points approximately 155 mm x 95 mm x 13 mm thick

Dimensions approximately 95 mm x 80 mm x 10 mm thick

These rare stromatolites are from the “Windidda Formation”

Each stone approx

Weighs 191 grams

Polished Marble Bar Chert MB110 Polished slab. Dimensions at widest points approximatelyMB110 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