Polished Tiger Iron slab TI384 asperia ashburtonia GRN103 Green Opal & Magnesite

GRN103  Green Opal & Magnesite rough rock

Dimensions at widest points approximately 200 mm x  135 mm x 7

145 mm x 90 mm x 65 mm thick & weighs 612 grams

Approximate dimensions at widest points 150 mm  x 95 mm  x 60 mm thick

DO230  Dendritic Opal slab

Polished Tiger Iron slab TI384 asperia ashburtonia GRN103 Green Opal & MagnesiteTI384 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 220 mm x 170 mm Very slightly tapering thickness 6. 5 8. 5 mm thick. Weighs: 820 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.