Polished Tiger Iron slab TI320 alcheringa narrina MN127 Magneprase slab

MN127  Magneprase slab

Dimensions at widest points approximately 100 mm x 90 mm x 60 mm thick

Dimensions at widest points approximately 130 mm  x 120 mm wide x 11 mm thick

DO192  Dendritic Opal slab polished on one side

Polished Tiger Iron slab TI320 alcheringa narrina MN127 Magneprase slabTI320 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 130 mm x 70 mm x 7. 5 mm thick. Weighs: 172 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 golden tiger eye.