碱性花岗岩
通常指钠质花岗岩，用于过碱性花岗岩。亦即含有碱性角闪石或碱性辉石的花岗岩。其化学成分显示碱过饱和：N(Na2O)+N(K2O)＞N(Al2O3)(分子数)，出现Ac分子。按深色矿物碱性花岗岩分为：钠闪石花岗岩、霓石花岗岩等；也有将不含深色矿物但含碱高的白岗岩等列入碱性花岗岩。与碱性花岗岩有关的矿产为铌、钽、锡、稀土元素、锆等。
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contributed at 2011-10-09
Classification(s)
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Earth System(in Chinese) Igneous petrology
Detailed Description
| English |
|---|
| Name | alkali granite |
| Chinese |
|---|
| Name | 碱性花岗岩 |
| Description | 通常指钠质花岗岩，用于过碱性花岗岩。亦即含有碱性角闪石或碱性辉石的花岗岩。其化学成分显示碱过饱和：N(Na2O)+N(K2O)＞N(Al2O3)(分子数)，出现Ac分子。按深色矿物碱性花岗岩分为：钠闪石花岗岩、霓石花岗岩等；也有将不含深色矿物但含碱高的白岗岩等列入碱性花岗岩。与碱性花岗岩有关的矿产为铌、钽、锡、稀土元素、锆等。 |
How to Cite
NNU_Group (2011). 碱性花岗岩, Concept & Semantic, OpenGMS,
https://geomodeling.njnu.edu.cn/repository/concept/62db86a1-850c-42f2-b207-01eb610afd85
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