Polished Tiger Iron slab TI378 polished crazy lace 140 mm x 100 mm

140 mm x 100 mm x 8

DO207  Dendritic Opal slab

140 mm high  x 120 mm x 65 mm thick

PA220  An Agate slab

Polished Tiger Iron slab TI378 polished crazy lace 140 mm x 100 mmTI378 Tiger Iron slab, polished on one side. Unusual specimen from a strongly weathered section of the outcrop. Dimensions at widest points approximately 190 mm x 120 mm x 15 mm thick. Weighs: 730 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