Pair of polished Orbicular Granite. OG188 polished noreena Vivianite is a rare iron

Vivianite is a rare iron phosphate and these nodules are found on the beach

765 million years Polymictic : a conglomerate which contains clasts (fragments) of many different rock types

TIR138 Tiger Iron rough rock

Unusual colouration caused by natural iron oxide weathering

Dimensions at widest points approximately 125 mm x 120 mm x 80 mm thick

Pair of polished Orbicular Granite. OG188 polished noreena Vivianite is a rare ironOG188 A matching pair of polished Orbicular Granite halves with natural rough backs. (A single nodule cut in half). Dimensions at widest points of each half approx. 90 mm x 80 mm x 35 45 mm thick. Weight of both is 907 grams. From Boogardie Station near Mount Magnet, Western Australia.