Polished Vivianite nodule half VV111 black conglomerate Approximate dimensions at widest points

Approximate dimensions at widest points 120 mm  x 60 mm  x 50 mm thick

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

DO206  Dendritic Opal slab

POP182   Brecciated Pink Opal slab

Dimensions approximately 220 mm x 155 mm x 10 mm thick

Polished Vivianite nodule half VV111 black conglomerate Approximate dimensions at widest pointsVV111 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.