Polished Vivianite nodule half VV110 lepidolite 140 mm x 125 mm

140 mm x 125 mm x 40 mm thick

Porphyry is a general term that is used rather loosely for  igneous rocks which contain relatively large isolated crystals set in a fine-grained groundmass

Dimensions approximately 160 mm x 95 mm x 12 mm thick

Weighs 478 grams

Weight 583 grams

Polished Vivianite nodule half VV110 lepidolite 140 mm x 125 mmVV110 Vivianite nodule cut in half with face polished. Dimensions at widest points approx. 125 mm x 95 mm x 30 mm. Weight : 435 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.