columbite minerai pyrochlore
Pyrochlore and columbite-tantalite as indicator minerals for specialty .Mar 24, 2015 . Abstract. Pyrochlore supergroup and columbite-tantalite series minerals can be used as indicators for specialty metal deposits. Their mineral.columbite minerai pyrochlore,Pyrochlore - Wikipedia, the free encyclopediaPyrochlore (Na,Ca)2Nb2O6(OH,F) is a solid solution between the niobium end member . The mineral is associated with the metasomatic end stages of magmatic . minerals include zircon, aegirine, apatite, perovskite and columbite.