Compositional variation in pyrochlore from the Bingo carbonatite, Zaïre
作者： C.T Williams , F Wall , A.R Woolley , S Phillipo
DOI: 10.1016/S0899-5362(97)00066-3
关键词: Compositional variation 、 Laterite 、 Calcite 、 Carbonatite 、 Geology 、 Geochemistry 、 Pyrochlore
摘要: Abstract The composition of pyrochlore from the calcite carbonatite and its associated laterite at Bingo, Zaire was determined compared with nearby geologically-similar Lueshe. Large compositional variations exist in Bingo which relate both to primary magmatic zonation and, more commonly, a secondary alteration process. Altered is rich Ba Si. At Lueshe an identical trend observed, but subordinate. Pyrochlore bariopyrochlore, whereas predominant variety kalipyrochlore.
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