树枝状晶体主要是由铁的氧化物——磁铁矿组成。
The branch shape crystallite is mainly composed of iron oxides, i. e. magnetite.
样品断面超薄片在显微镜下观察发现树枝状晶体不透光，反射色亮白。
By the observation of polarizing microscope, it is found that the thin section of branch shape crystallite is not transparent and its reflecting color is white.
通过一系列的观察和分析发现：(1)黑点的强反光性是由树枝状晶体产生。
From a series of observation and analysis it is found that: 1. The high reflection on the surface of the specks is produced by the branch shape crystallite.
通过一系列的观察和分析发现：(1)黑点的强反光性是由树枝状晶体产生。
From a series of observation and analysis it is found that: 1. The high reflection on the surface of the specks is produced by the branch shape crystallite.
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