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CARBONATITES : OCCURRENCES, CHARACTERISTICS AND THEIR ECONOMIC SIGNIFICANCE

Carbonatites are rare igneous rocks having more than 50% of carbonate minerals. The mineralogy of the carbonatites is highly variable and contains calcite, dolomite, ankerite, natrolite, sodalite, apatite, magnetite, barite, fluorite, mica etc. in variable proportion. Geochemical...