...（Or）含量 较高的类型为主。下面对这类矿物 笼统称钾长石，并作重点介绍。注 意：钾长石并不是一矿物种。 ?正长石（orthoclase）：K[AlSi3O8]鉴定特征： 晶体呈短柱状或厚板状。常见卡斯 巴律双晶。
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orthoclase twin 正长石双晶
gallium orthoclase 镓正长石
soda orthoclase 钠正长石
biotite orthoclase gabbro 云正辉长岩
sodian orthoclase 钠正长石
common orthoclase 普通正长石
epidote orthoclase pegmatite 绿帘正长伟晶岩
Among them, most of potassic is orthoclase and, main plagioclase is albite, minority is oligoclase.3.
其中,钾长石以正长石为主,斜长石以钠长石为主,少数为更长石。
参考来源 - 甘肃金川古元古代花岗岩的特征及地质意义·2,447,543篇论文数据，部分数据来源于NoteExpress
N a white to pale yellow, red, or green mineral of the feldspar group, found in igneous, sedimentary, and metamorphic rocks. It is used in the manufacture of glass and ceramics. Composition: potassium aluminium silicate. Formula: KAlSi3O8. Crystal structure: monoclinic 正长石
Feldspar can be divided into two large group, the potassium feldspar includes orthoclase and microcline.
长石可以分为钾长石和斜长石两大类，钾长石中包括正长石和微斜长石。
Perthite is orthoclase or microcline and albite over the product, which is more than orthoclase or microcline albite.
条纹长石是正长石或微斜长石与钠长石交生的产物，其中正长石或微斜长石多于钠长石。
The moonstone has several kinds of color, they all belong to orthoclase. It is shown by study that the moonlight effect is determined by its own inner structure.
月光石有几种颜色，但分析测试表明都属于正长石，研究表明月光效应是由其自身结构决定的。
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