Polished Marble Bar Chert slab MB122

 MB122

Marble Bar Chert slab polished on one side .

Dimensions at widest points approximately 120 mm x 100 mm x 9.5 mm thick. 

Weighs 273 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 Earth’s oldest well-preserved sedimentary rocks.

From near the town of Marble Bar in Western Australia.