摘要
Niobium anatase, a variety of anatase, occurred in a sodium-metasomatic rock with striped texture in Bayun Obo ore field.The major minerals in the rock are aegirine, aegirine augite, riebeckite-arfvedsonite, calcite, dolomite, while minor accessories are fluor, ilmenite, monazite, aeschynite, etc. The aggregates of niobium anatase and aeschynite dispersed in the rock with size 0.1-0.3 mm or 1-3 mm.
