Named after Niels Viggo Ussing, professor of Mineralogy at the University of Copenhagen, this rare silicate mineral can be found in only a few locations worldwide including Greenland and northern Russia. It typically has a massive habit and can be light pink, lilac-blue, and in rare cases dark violet-red.
- Optical Properties
- Characteristic Physical Properties
- Chemistry & Crystallography
Countries of Origin
Canada; Unknown; Russian Federation (the); Denmark