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湘中锡矿山式锑矿与硅化关系密切。稀土元素地球化学研究表明,存在着灰岩硅化和砂泥质岩硅化不同原岩类型的成矿围岩蚀变。硅化岩的稀土元素含量要比未蚀变原岩稍低,但是仍具有与原岩一致的相对关系,据此,可以恢复硅化岩原岩。硅化灰岩的稀土元素含量低,硅化砂岩(包括硅化泥质粉砂岩)相对较高。硅化灰岩的稀土元素配分型式有负Eu异常和负Ce异常;而硅化砂岩稀土元素配分型式类似原岩,只有负Eu异常,无Ce异常。辉锑矿稀土配分型式也区分出有Ce异常和无Ce异常的两种类型,反映成矿流体是否有对灰岩地层广泛强烈的硅化蚀变交代。
The ore-type antimony mine in Hunan, China is closely related to silicification. Rare earth element geochemical studies indicate that there exist alteration of metallogenic wall rocks of different types of protoliths of limestone silicification and sapropelite silicification. The content of REE in silicified rock is slightly lower than that of unetorphic rock, but it still has the same relative relationship with the original rock, so that the silicified rock can be recovered. Limestone is low in REE and silicified sandstone (including silicified siltstone) is relatively high. The distribution patterns of rare earth elements in silicified limestone have negative Eu anomaly and negative Ce anomaly. However, the REE patterns of silicified sandstone are similar to those of original rock, with only negative Eu anomaly and no Ce anomaly. The stibnite rare earth complex type also distinguishes two types of Ce anomaly and no Ce anomaly, reflecting whether the ore-forming fluid has widespread intense silicification alteration to limestone strata.