Carbonitized K-rich lamproites (volcanic ring complex in a subsidence caldera related to an upper mantle plume and triple junction of upper mantle convection boundaries).
Complex structure with three distinct zones :
- Pyrochlore carbonatites
- Lower ore zone: metasomatically carbonatized volcanites enriched in REE, Nb, Y and Sc)
- Upper ore zone: placer deposit affected by hydrothermal alteration
Presence of kamafugite dikes and pipes.
Scandium exists in a distinct phase : Sc(OH)3 film on phosphates.
Ref.:
S.M. Kravchenko and B.G. Pokrovsky (1995): Economic Geology, 90, 676-689.
Mineral List:54 entries listed. 42 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
