Polished Marble Bar Chert slab MB122 prehnite Weighs: 165 grams

Weighs: 165 grams

NJT127  Tumble polished Noreena Jasper from Western Australia

Dimensions at widest points approximately 150 mm x 80 mm and 25 mm thick

80 mm x 80 mm  x 15 mm

Dimensions at widest points approximately 250 mm x 90 mm x 45 mm thick

Polished Marble Bar Chert slab MB122 prehnite Weighs: 165 gramsMB122 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 Earths oldest well preserved sedimentary rocks. From near the town