Polished Tiger Iron display specimen TI314 Nickeloan magnesite From the Sinclair pegmatite near

From the Sinclair pegmatite near Norseman

DO185  Dendritic Opal slab polished on one side

NJ452   Noreena Jasper slab

Weighs 709 grams

Polished Tiger Iron display specimen TI314 Nickeloan magnesite From the Sinclair pegmatite nearTI314 Tiger Iron , a thick slab, polished on one side with a cut base to stand as a display specimen. Dimensions at widest points approximately 240 mm x 140 mm x 55 mm thick. Weighs: 3,771 grams From the Cleaverville Formation, Ord Ranges near Port Hedland, Western Australia. Age is over 3 billion years. Tiger iron is a banded iron formation (BIF) or jaspilite that has alternating layers of black and brown hematite magnetite, red jasper and chatoyant