伊利石广泛存在于铜厂大型斑岩铜矿床内, 是钾化的特征热液蚀变矿物, 其结晶度(IC)和膨胀层含量受携带矿质的热液流体量制约. 以浸染状强矿化为特征的斑岩体中上部, 特别是接触带附近, 伊利石结晶度较小, 主要是高水/岩比作用的结果. 同时指示了, 伊利石结晶度小的部位, 矿化品位高, 蚀变程度也强. 在低水/岩比、流体量小的深部斑岩体内, 伊利石结晶度则主要受温度、时间控制. Illite widely exists in the copper plant large porphyry copper deposit, is a characteristic hydrothermal alteration mineralization of potassium, whose crystallinity (IC) and expansive layer content are controlled by the amount of hydrothermal fluid carrying minerals. Mineralization is characterized by the upper part of the porphyry, especially near the contact zone, illite smaller crystallinity, mainly the result of the high water / rock ratio.At the same time indicates that the illite crystallites of small areas, mineralized grade High, and high degree of alteration.In the deep porphyry with low water / rock ratio and small fluid volume, the illite crystallinity is mainly controlled by temperature and time.