Polished Vivianite nodule half VV111 black conglomerate Dimensions at widest points approximately

Dimensions at widest points approximately 75 mm x 70 mm x 6

Dimensions at widest points approximately 185 mm x 105 mm x 35 mm thick

280 mm x 140 mm  x 11 mm

Dimensions at widest points approximately 160 mm x 65 mm x 9 mm thick

Polished Vivianite nodule half VV111 black conglomerate Dimensions at widest points approximatelyVV111 Vivianite nodule cut in half with face polished. Dimensions at widest points approx. 110 mm x 60 mm x 35 mm. Weight : 274 grams. From Demons Bluff, Anglesea, Victoria. Vivianite is a rare iron phosphate and these nodules are found on the beach, washed up from their source on the ocean floor.