Polished Tiger Iron slab TI291 fossil stromatolite Mostly plain petrified wood but

Mostly plain petrified wood but one Teredo bore hole is visible

CH435  Chrysoprase  slab polished  on one side

125 mm x 80 mm x 10 mm

DOT105  Tumble polished Dendritic Opal

Weighs 258 grams

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.