Polished Tiger Iron display specimen TI314 dendritic opal 100 mm x 60 mm

100 mm x 60 mm x 8

Weight is 128 grams

90 & 100 mm x 50 mm  thick

Magnesite (Lemon chrysoprase) rough rock (nodule)

It weighs 284 grams

Polished Tiger Iron display specimen TI314 dendritic opal 100 mm x 60 mmTI314 Tiger Iron , a thick slab, polished on one side with a cut base to stand as a display specimen. Dimensions at widest points approximately 240 mm x 140 mm x 55 mm thick. Weighs: 3,771 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