Pyrochlore Locality: Vishnovogorsk, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia (Locality at mindat.org) A large and very fine specimen, loaded wi — Photo: Leon Hupperichs · CC BY-SA 3.0
Pyrochlore Supergroup
Pyrochlore Supergroup is a mineral group, with the chemical formula (Na,Ca)₂Nb₂O₆(OH,F).
It crystallizes in the cubic crystal system.
Key properties: Mohs hardness 5–5.5; typically brown or black or yellow or orange.
Collections: Collector Favorites, Rare & Remarkable.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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