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CARBONATITE A Carbonatite is an igneous rock that may be either intrusive or extrusive and is composed of at least 20% carbonate minerals. Note that the metamorphic rock marble consists primarily of the carbonate mineral calcite. Carbonatites typically have a higher percentage of other minerals including silicates.The rock known as natrocarbonatite primarily consists of two carbonate minerals, nyerereite and gregoryite. |
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