Polished Tiger Iron slab TI262 chrysoprase SD157 Stromatolitic Dolomite slab

SD157 Stromatolitic Dolomite slab

Weighs 834 grams

McGrath Formation" which has an age of close to 2 billion years

Dimensions approximately 85 mm x 65 mm x 7 mm thick

DO174  Dendritic Opal slab

Polished Tiger Iron slab TI262 chrysoprase SD157 Stromatolitic Dolomite slabTI262 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 150 mm x 90 mm wide x 9 mm thick. Weighs: 317 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.