Polished Tiger Iron slab TI291 fossil stromatolite Dimensions at widest points approximately

Dimensions at widest points approximately 140 mm  x 90 mm wide x 8 mm thick

Dimensions at widest points approximately 110 mm x 85 mm x 40 mm thick

DO183  Dendritic Opal rough rock

Dimensions at widest points approximately 80 mm  x 35 mm wide x 6

The stone from this deposit was last mined more than 30 years ago

Polished Tiger Iron slab TI291 fossil stromatolite Dimensions at widest points approximatelyTI291 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 160 mm x 100 mm wide x 6. 5 mm thick. Weighs: 259 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.