Polished Marble Bar Chert slab MB132 Marramamba Tiger Eye pale blue cleavelandite and pollucite

pale blue cleavelandite and pollucite

90 mm x 40 mm x 30 mm thick

DO227  Dendritic Opal rough rock

95mm x 45mm x 30mm thick

Magnesite (Lemon chrysoprase) rough rock (nodule)

Polished Marble Bar Chert slab MB132 Marramamba Tiger Eye pale blue cleavelandite and polluciteMB132 Marble Bar Chert slab polished on one side . Dimensions at widest points approximately 115 mm x 90 mm x 8 mm thick. Weighs 198 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