Polished Marble Bar Chert slab MB126 #brecciated pink opal 220 mm x 125 mm

220 mm x 125 mm x 9 mm thick

Weighs 312 grams

Weighs 345 grams

IRR 123    Fossil stromatolite slab

Dimensions at widest point approximately 100 mm x 90 mm x 8 mm

Polished Marble Bar Chert slab MB126 #brecciated pink opal 220 mm x 125 mmMB126 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 280 mm x 150 mm x 12 mm thick. Weighs 857 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 rocks. From near the town of