单词	alkalic
释义	alkalic /alˈkalɪk / adjective Geology (Of a rock or mineral) richer in sodium and/or potassium than is usual for its type.In the northern Cordillera lower Paleozoic alkalic and potassic mafic magmatism is linked with rifting of the Selwyn Basin.... Within the Grenville basement these are represented by alkalic to tholeiitic mafic dykes and alkalic to peralkaline granite plutons. Some ore deposits occur in alkalic ultrabasic rocks derived from the Earth's mantle.
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