Tiger iron is a mixture of minerals made up of the following components:
Brown jasper
Gold-shining tiger eye and
black, shiny metallic veins of magnetite.
These iron strip ores emerged from submarine volcanoes more than 2 BILLION years ago. The other components did not form until more than a BILLION years LATER.
The piece comes from the BANDET IRON MINE in TRANSVAAL – SOUTH AFRICA