某矿物Ng-Np=0.018,Ng-Nm=0.012,该矿物为()

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某矿物Ng-Np=0.018,Ng-Nm=0.012,该矿物为()

A.一轴正晶

B.一轴负晶

C.二轴正晶

D.二轴负晶

参考答案:

答案:二轴正晶