Polished Marble Bar Chert slab MB101 dendrite museum quality piece with magnetite

museum quality piece with magnetite cones

EU114  Eucryptite rough rock

Dimensions at widest points approximately 95 mm x 55 mm and 40 mm thick

Dimensions at widest points approximately 85 mm x 60 mm x 50 mm thick

Weighs 372 grams

Polished Marble Bar Chert slab MB101 dendrite museum quality piece with magnetiteMB101 Marble Bar Chert slab, polished on one side. Dimensions at widest points approximately 130 mm x 60 mm x 9. 8 mm thick. Weighs 170 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