Polished Marble Bar Chert MB120 asperia ashburtonia WAT105 Tumble polished Wyloo Agate

WAT105  Tumble polished Wyloo Agate

PG127  Pegmatite rough rock

115 mm x 95 mm x 8

Dimensions approximately 120 mm x 30 mm x 10 mm thick

OG183   Polished orbicular granite with natural rough back

Polished Marble Bar Chert MB120 asperia ashburtonia WAT105 Tumble polished Wyloo AgateMB120 Marble Bar Chert. Cut and polished on one side with a rough, natural back. Dimensions at widest points approximately 130 mm x 60 mm x 50 mm thick. Weighs 490 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