This variety of goethite displays vibrant, iridescent colors due to thin layers of turgite, a mixture of hematite and goethite, on its surface.
It is a secondary mineral, meaning it forms from the alteration of other iron-rich minerals like pyrite, magnetite, and siderite.
Goethite is known for its diverse range of colors, from yellow and reddish-brown to black, and is found in various geological settings, including soils, sediments, and iron ore deposits.
Sourced from Tharsis, Huelva, Spain.
Mineral Information:
- Goethite FeO(OH)
Approx. Weight & Dimensions:
- 1048g - 9.5 cm x 10.8 cm x 7.6 cm
Also Known As:
-Turgite
