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 point approximately 120 mm x 60 mm x 35 mm

DO206  Dendritic Opal slab

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

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

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.