is a variety of tiger Eye ,or better
tiger iron, a mixture of iron oxide, tiger eye magnetite and hematite. In fact is related to what is called B.I.F. ( banded iron formation) ,a very old rocks made of layer of stromatolite and iron minerals. It's one of the oldest marine rocks dated over a billion years old.
The difference from normal tiger eye/iron is the color: copper-red,blue,green,gold are mixed with hematite-magnetite and this iron formation comes only from the Hamersley Ranges of the Pilbara region in Western Australia.