Polished Tiger Iron slab TI385 dup-review-publication Amethyst crystal cluster from Wyloo

Amethyst crystal cluster from Wyloo

BJ134  Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

Dimensions 110 mm x 65 mm x 10

Dimensions at widest points approximately 200 mm

Dimensions at widest points approximately 115 mm x 90 mm x 9 mm thick

Polished Tiger Iron slab TI385 dup-review-publication Amethyst crystal cluster from WylooTI385 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 190 mm x 135 mm x 7 mm thick. Weighs: 410 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.