Description
Mostly plain petrified wood but one Teredo bore hole is visible
Weighs 250 grams
Dimensions approximately 110 mm x 110 mm x 80 mm thick
most likely grunerite
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Polished Tiger Iron slab TI291 fossil stromatolite Mostly plain petrified wood butTI291 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.