Polished Tiger Iron slab TI212 tube agate Asperia digitata (formerly Yelma digitata)

Asperia digitata (formerly Yelma digitata) from the Proterozoic "Yelma Formation"

PG117  Pegmatite slab

Dimensions approximately 170mm x 110mm x 11mm thick

Stichtite in Serpentine rough rock

Polished Tiger Iron slab TI212 tube agate Asperia digitata (formerly Yelma digitata)TI212 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 110 mm x 100 mm wide x 6. 5 mm thick. Weighs: 208 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.