Polished Marble Bar Chert MB105 Polished slab. From near Kalgoorlie

From near Kalgoorlie

115 mm x 75 mm x 6 mm thick

(Roughly 2 cm

Fossil stromatolite slab

190 mm x 100 mm x 90 mm thick

Polished Marble Bar Chert MB105 Polished slab. From near KalgoorlieMB105 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 50 mm thick. Weighs 1,109 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