河南槐树坪矿区M_(1-Ⅰ)~#金矿体特征及地质意义

Orebody Characteristics and Geological Significance of M_(1-Ⅰ)~# Orebody in Huaishuping Mining Area in Henan Province

通过对槐树坪矿区坑探工程内缓倾斜金矿体(M_(1-Ⅰ)~#矿体)的详细观察研究,发现矿体在形成后受到了后期构造运动的破坏,矿体的形态特征表现为:(1)矿体在剖面上一般呈舒缓波状的薄脉状,且被多条小型断裂错断,虽然断距较小,但是破坏了矿体在走向、倾向上的连续性;(2)黄铁矿化是与金矿体密切相关的金属矿化,硅化和钾化则是与金矿体关系密切且强度较高的主要蚀变类型;(3)金矿体表现为相对低阻高激化特征,与之密切相伴的石英脉则表现为高阻低极化特征。在上述分析的基础上,进一步研究认为:利用金矿体及石英脉显著的电阻率、极化率特征差异寻找隐伏矿体,并在矿体开发利用过程中追踪被错断的矿体,势必能够大幅提高找矿效果。

Through the detailed observation and study of the gently dipping gold orebody （M#1-I ore- body ） in the pit excavation project in Huaishuping mining area in Henan Province, it is found that the orebody is damaged by the tectonic movement after the formation,its morphological characteristics can be summarized as following ： ①in the orebody profile,the orebody is distributed as generally slow-waved thin veins ,it is broken by several small faults, although the fault interval is small, the continuity of gold ore- body in the strike and inclination is destroyed; ②pyrite mineralization is a metal mineralization that is closely related to gold orebody in mineralization alteration,silicification and potassiumization are the main alteration alternation types that are closely related to gold orebody and high in intensity ; ③the gold ore- body is characterized by relatively low resistivity and high intensification in physical properties , while quartz veins closely accompanying them show the characteristics of high resistivity and low intensification. Based on the above discussion results, the further study resutls show that the prospecting effects can be improved by utilizing the significant difference between the resistivity and polarizability of gold orebody and quartz vein to find the hidden orebody and tracing the faulty orebody in the process of development and utilization.