Polished Marble Bar Chert slab MB113 polished slab Dimensions at widest points approximately

Dimensions at widest points approximately 125 mm x 85 mm x 11 mm  thick

AZ143  Azurite sun mineral specimen

Dimensions at widest points approximately 125 mm x 115 mm x 35 mm thick

Weighs 942 grams

Approximate dimensions at widest points 115 mm  x 185 mm  x 25 mm thick

Polished Marble Bar Chert slab MB113 polished slab Dimensions at widest points approximatelyMB113 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 100 mm x 80 mm x 8. 5 mm thick. Weighs 156 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