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本文根据特征离子坐标变化的特点，对黄铁矿型结构的微变规律性进行了讨论，作了一些规律图。总结出；成分的变化控制着u值的变化，u值的变化影响着晶体结构的微变化。u值发生变化，MX6反三方柱的顶面和底面会沿3轴相向或相背移动，u值增加愈接近正八面体。u值发生变化，X（M3X）三方锥底面的方位不变，但锥顶（X7）和锥体内的（X1）的坐标要变化，它们会沿着雄的中轴线相向或相背移动，形成扁平型的三方锥。最后得出：当成分变化时，X离子的移动是按照X＝Y＝Z的直线方程进行的。
According to the characteristics of the change of the characteristic ion coordinate, this paper discussed the regularity of the micro-change of the pyrite structure and made some regular patterns. It is concluded that the change of composition controls the change of u value and the change of u value affects the micro change of crystal structure. u value changes, MX6 anti-tripartite column top and bottom along the 3-axis will move opposite or opposite, u value increases closer to the octahedron. The value of u changes, the orientation of the bottom surface of the tripartite cone of X (M3X) does not change, but the coordinates of the cone top (X7) and the cone inside the cone (X1) are to be changed and they will move toward or away from the central axis of the male to form Flat type of three cone. Finally, we get: When the composition changes, the movement of X ions is carried out according to the linear equation of X = Y = Z.