Polished Tiger Iron slab TI324 Rough rock our "Black Jasper Conglomerate" is

our "Black Jasper Conglomerate" is a polymictic pebble and cobble conglomerate

Dimensions at widest points approximately 90 mm x 70 mm x 8 mm thick

Weighs 541 grams

Dimensions approximately 100 mm x 50 mm x 11 mm thick

Dimensions at widest points approximately 145 mm x 80 mm and 9 mm thick

Polished Tiger Iron slab TI324 Rough rock our "Black Jasper Conglomerate" isTI324 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 170 mm x 110 mm x 5. 8 mm thick. Weighs: 254 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.