Polished Marble Bar Chert slab MB121 purple Fossil stromatolite thick slab polished

Fossil stromatolite thick slab polished on one side

cut and polished on one side with a natural back and a cut base to sit securely as a display specimen

Dimensions at widest points approximately 60 mm x 40 mm x 35 mm thick

Dimensions at widest points approximately 220 mm x 115 mm x 10 mm thick

Brecciated Snakeskin Jasper

Polished Marble Bar Chert slab MB121 purple Fossil stromatolite thick slab polishedMB121 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 100 mm x 100 mm x 8 mm thick. Weighs 196 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