Polished Marble Bar Chert slab MB129 asperia Weight is 630 grams

Weight is 630 grams

Dimensions at widest points approximately 85 mm x 40 mm x 40 mm thick

Dimensions at widest points approximately 165 mm x 80 mm x 12 mm  thick

Rough Lime (Nickeliferous) Magnesite nodule

Approximate dimensions at widest points 220 mm  x 60 mm  x 14 mm thick

Polished Marble Bar Chert slab MB129 asperia Weight is 630 gramsMB129 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 255 mm x 110 mm x 10 mm thick. Weighs 568 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