Pyrochlores from the Lueshe carbonatite complex (Democratic Republic of Congo): a geochemical record of different alteration stages
作者： Mohamed Nasraoui , Essaïd Bilal , None
DOI: 10.1016/S1367-9120(99)00056-5
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摘要: … Nb ratios in an increasing order from pyroxenite, calcite-carbonatite (sövite), silicate xenoliths … (VA=A-site vacancy and VY=Y-site vacancy). In calcite carbonatite, hydrothermal alteration …
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