Hexahedrite（方陨铁，即六面体铁陨石）

Hexahedrites are a type of iron meteorite. They are composed almost exclusively of the nickel-iron alloy kamacite, and are lower in nickel content than the Octahedrites.

（方陨铁是铁陨石的一种类型。几乎全部由铁纹石组成，镍成分低于八面体陨铁）The name comes from the cubic (i.e. hexahedron) structure of the kamacite crystal. After etching, hexahedrites do not display a Widmansttten pattern, but they often do show Neumann lines: parallel lines that cross each other at various angles, and are indicative of impact shock on the parent body. They are named after Franz Ernst Neumann, who discovered them in 1848.

（名字来源于铁纹石的立方体，六面体的结构。经过酸蚀处理后，六面体陨铁不会呈现维斯台登构造，而是常常露出纽曼线：即按照不同角度相互交叉的平行线，这说明陨石的母体遭受了冲击效应。）

Neumann lines（纽曼线）

Neumann lines, or Neumann bands, are fine patterns of parallel lines seen in cross-sections of many hexahedrite iron meteorites in the kamacite phase. They can be seen after a polished meteorite cross-section is treated with acid. The lines are indicative of a shock-induced deformation of the kamacite crystal, and are presumably due to impact events on the parent body of the meteorite.

（纽曼线，或者是纽曼带，是在很多六面体陨铁的铁纹石相横截面能够看到的由平行线构成的精美图案。他们能够在经过酸处理的六面体铁陨石横截面被发现。这种线是铁纹石经受冲击变形效应的表征，很可能来源于陨石母体的撞击事件）

The lines are named after Franz Ernst Neumann, who discovered them in 1848 

Neumann lines

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帮大家粗略翻译了一下，如有错误，欢迎指正

附上纽曼线的照片，方便大家参考，请大家多多注意与维斯台登构造的区别