Polished Marble Bar Chert slab MB111 crazy lace Approximate dimensions at widest points

Approximate dimensions at widest points 120 mm  x 65 mm  x 60 mm thick

Approximate weight of each piece is between 12 and 42 grams

AMU111   Amethyst geode portion from Artigas

5  mm  thick

170 mm x 85 mm  x 9 mm

Polished Marble Bar Chert slab MB111 crazy lace Approximate dimensions at widest pointsMB111 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 135 mm x 120 mm x 9. 5 mm thick. Weighs 369 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