Polished Tiger Iron TI295 rare agate The subtle lime green colouration

The subtle lime green colouration is caused by the presence of nickel mineralisation

A large polished slab of Starry Jasper

Weight of box and contents 5

OJ170  A rough rock

Weighs 153 grams

Polished Tiger Iron TI295 rare agate The subtle lime green colourationTI295 Tiger Iron rough rock, cut and polished on one side with a natural rough back. Dimensions at widest points approximately 120 mm x 40 mm wide x 55 mm thick. Weighs: 608 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