Polished Tiger Iron slab TI323 chalcedony These small branching columnar stromatolites

These small branching columnar stromatolites are from the “Mount Leake Sandstone”

This one has a little heart in it

irregular columns

From the Eastern Goldfields region of Western Australia

Dimensions at widest points approximately 125 mm x 95 mm x 9

Polished Tiger Iron slab TI323 chalcedony These small branching columnar stromatolitesTI323 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 160 mm x 65 mm x 7. 5 mm thick. Weighs: 211 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.