云南白象厂斑岩型金矿床地质特征与成矿条件研究

Conditions of Formation and Origin of Baixiang Factory Porphyry Gold Deposit in Binchuan City of Yunnan Province

对研究区地质特征及成矿条件进行详细研究,研究表明:矿区内主要发育北东向和北西向断裂,并出露大量富碱小斑岩体。良好的构造环境和活跃的岩浆活动,为金成矿创造了极为有利的条件。研究区的成矿围岩主要是中上石炭统碳酸盐岩,Cu、Pb、Zn、Ag、Sb、Au、As、Mo原始丰度相对较高,当富碱岩浆侵入时,所带来的热液蚀变、矿质交代等作用,有利于成矿。在矿区,矿体的产出受到北东向和北西向构造线的控制。研究区斑岩金矿的形成,是受到地层、构造、岩浆活动三者联合作用的结果。

The magmatic activity is intense with the fault structure developing. The metallogenic geological conditions are superior. The geological characteristics and metallogenetic conditions are studied in detail in this paper. The results show that NE-and NW-trending faults are mainly developed in the mining area,and it exposed a large number of alkali-rich porphyry body. The favorable tectonic setting and active magmatic activity have created favorable conditions for gold mineralization. The metallogenic rocks in our researching area are mainly in middle and upper Carboniferous carbonate rocks. The original abundance of Cu, Pb, Zn, Ag, Sb, Au, As and Mo is relatively high. When the alkali-rich magma intrudes, the hydrothermal alteration and mineralization will be beneficial to mineralization. In the mining area, the output of orebodies is controlled by NE and NNW tectonic lines. In general, the formation of porphyry gold deposit in this area is the result of the combination of formation, structure and magmatic activities. In the mining area, the output of the orebodies is controlled by NE and NNW tectonic lines. The formation of porphyry gold deposit in this area is the result of the combination of formation, structure and magmatic activities.