Pyrochlore crystals (fluorcalciopyrochlore)

Veshnovogorsk, Ural Mts., Russia

Pyrochlore crystals (fluorcalciopyrochlore)
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Article codeIV.0.0-002
Lot of pyrochlore crystals (fluorcalciopyrochlore)
Partially gemmy, burnished brown-red pyrochlore octohedrons from Veshnovogorsk, Ural Mts., Russia.
Pyrochlore is an uncommon niobium oxide.

Pyrochlore (Na,Ca)2Nb2O6(OH,F) is a mineral group of the niobium end member of the pyrochlore supergroup. Pyrochlores are an important class of materials in diverse technological applications such as luminescence, ionic conductivity, nuclear waste immobilization, high temperature thermal barrier coatings, automobile exhaust gas control, catalysts, solid oxide fuel cell, ionic/electrical conductors etc.  Associated minerals include zircon, aegirine, apatite, perovskite and columbite.