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三斜晶系光性方位是光学主轴与结晶轴均斜交。
7 查阅
三斜晶系光性方位是光学主轴与结晶轴均斜交。
A.正确
B.错误
点击查看答案
参考答案:
答案:正确
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相关问题:
电气石为三方晶系矿物,c轴方向折射率为1.624,a轴方向折射率为1.644,电气石
磷灰石(六方晶系),平行c轴的偏光折射率为1.624,垂直c轴的偏光折射率为1.629
已知某矿物的光性方位是b∥Np=1.693,a∥Nm=1.700,c∥Ng=1.705,该矿物的晶
黄玉(斜方晶系矿物)的(010)切面上的主折射率值分别为1.607和1.617,(001)切面上
黄玉(斜方晶系矿物)的(010)切面上的主折射率值分别为1.607和1.617,(001)切面上
角闪石Ng=1.701,Nm=1.691,Np=1.665,Nm∥b轴,Ng∧c=25°,β(c∧a)=106°,该矿物
斜方晶系矿物可以有平行消光、对称消光和斜消光。
三斜晶系矿物以斜消光为主。
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