Polished Tiger Iron slab TI385 fossil stromatolite IRR 123 Fossil stromatolite slab

IRR 123    Fossil stromatolite slab

Weighs  164 grams

Dimensions at widest points approximately 80 mm x 50 mm x 40 mm thick

Dimensions at widest points approximately 130 mm x 90 mm x 70 mm thick

Polished Tiger Iron slab TI385 fossil stromatolite IRR 123 Fossil stromatolite slabTI385 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 190 mm x 135 mm x 7 mm thick. Weighs: 410 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.