云南来利山锡矿锡石标型特征及其找矿意义
张弘,申俊峰,董国臣,刘圣强,王冬丽,王伟清

The study on the typomorphic characteristics of cassiterite of Lailishan tin deposit in Yunnan province and its prospecting significance
Hong Zhang,Junfeng Shen,Guochen Dong,Shengqiang Liu,Dongli Wang,Weiqing Wang
表1 来利山锡矿区不同成矿阶段锡石的形态特征
Table 1 Morphological characteristics of cassiterite in different mineralization stages of Lailishan tin deposit

成 矿

阶 段

晶体形态
结晶习性 长宽比 粒度(mm) 双晶特征
粒状、双锥柱状 1~3 0.2~0.5 mm 可见六连晶,偶见聚片双晶、格子双晶
(最大2 mm)
短柱状、长柱状 3~8 0.1~0.3 mm 偶见膝状双晶
长柱状、放射状 >10 0.05~0.2 mm -
球粒状 >10 <0.2 mm -