carbonatite
Quick Summary
Carbonatites are a type of igneous rock primarily composed of carbonate minerals like calcite and dolomite. These rocks are of intrusive origin and can contain valuable ore minerals, such as those for rare earths, niobium, and copper.1234
The exact origin of carbonatite magma is not fully understood, but they are often found near alkaline or ultramafic igneous rocks. Carbonatites have been discovered on every continent and vary in age, with some dating back to the early Proterozoic Eon. Many carbonatite deposits are economically significant and are mined for various resources.14
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