摘要
黄铁矿热电性是矿床学及深部地质找矿的重要研究内容之一,该方法多应用于金矿床的地质勘探,而在铜矿床勘探中应用较少。滇中和尚洞铜矿床属于中高温热液矿床,矿体宏观地质条件差异小,深部找矿难度大,本文对该矿床Ⅰ号矿体开展了黄铁矿热电性特征及深部找矿预测研究。结果表明,该矿床黄铁矿热电系数分布呈现多峰组合,矿体铜矿化强度与黄铁矿P-N型的出现率及离散度等关系密切,尽管1580中段仍存在工业矿体,但Ⅰ号矿体深部延伸相对较小,找矿前景相对较差。研究表明,利用黄铁矿热电系数特征指导铜矿床的深部找矿预测是可行的。
The thermoelectricity of pyrite is one of the important research objects of mineral deposit science and geological prospecting of mineral resources in depth. Currently, it has been mainly used for the geological prospecting of gold deposit but has rarely been used in the exploration of copper deposit. The Heshangdong copper deposit in the central Yunnan belongs to the medium and high temperature hydrothermal deposit. Due to very small geological difference between its orebodies and wallrocks, the prospecting of Cu resource in depth of the deposit is very difficult. In this paper, we have carried out a research on the thermoelectric characteristics of pyrites of its No.1 orebody for serving the ore-prospecting in depth of the deposit. The research findings show that the pyrite thermoelectric coefficients of the deposit are distributed with a multi-peak combination. The copper mineralization intensity of the orebody is closely related to the occurrence rates and dispersion degrees of the P-N types of pyrites. Although the industrial orebody was still intersected by aditing at 1580 level, the possibility of the extension of No. 1 orebody to deeper part of the deposit could be relatively small, indicating a relatively poor prospecting prospective. This study claims that it is feasible to use the characteristics of pyrite thermoelectric coefficient for guiding the ore prediction and prospecting of copper resource in depth of the deposit.
作者
李灿明
李波
LI Can-ming;LI Bo(Kunming University of Science and Technology,Kunming 650093,China)
出处
《矿物岩石地球化学通报》
CAS
CSCD
北大核心
2021年第2期470-477,共8页
Bulletin of Mineralogy, Petrology and Geochemistry
关键词
黄铁矿
热电性
铜矿床
深部找矿预测
和尚洞铜矿床
pyrite
thermoelectricity
Cu deposit
ore prediction and prospecting in depth
Heshangdong copper deposit
