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How Is Rhodonite Formed?

Rhodonite is a mineral that is crystalline in structure, with a pink to brownish-red color that can also appear gray or yellow. Black hues may also be present. The crystals have a rough texture and rounded edges. Its name is derived from the Greek word "rhodos," which means "rose colored."

Formation
- The mineral can be found in manganese deposits formed by sedimentary, hydrothermal and metamorphic processes. Manganese is a pinkish-gray metal that is often used during iron and steel production, and is an essential trace element in the human body to maintain good health, though it is toxic in high doses.
Hardness
- Rhodonite has a hardness value of six on the Mohs scale, where the higher numbers equal a harder substance. For example, diamonds have a Mohs score of 10 and quartz has a value of 7 on the scale. Hardness is calculated by surface resistance to abrasion.
Locations
- Fine examples of rhodonite can be found at the following international locations: Ural Mountains in Russia, near Okehampton in England and at Broken Hill in the state of New South Wales, Australia. U.S. locations include Ogdensburg, New Jersey, and near Butte, Montana.

Rocks & Minerals