枪马金矿金品位统计分布特征及其地质意义  

Statistical distribution of gold grade in Qiangma gold deposit and its geological significance

作　　者：马文征 黄建平 郭晓 王铁军[1] 杨秀峰[1] 

机构地区：[1]中钢集团天津地质研究院,天津300181 [2]灵宝黄金股份有限公司,河南灵宝472500

出　　处：《地质找矿论丛》2012年第4期479-484,共6页Contributions to Geology and Mineral Resources Research

摘　　要：地质变量的变化与地质体的特征密切相关,通过地质变量的研究可以揭示地质体某一特征的规律性。多次地质事件的数理统计特征表现为多个总体叠加的混合分布,因此通过研究混合分布和单一分布的特征,对矿床的矿化成因、矿化过程和矿化特征认识有指导意义。研究发现,枪马金矿的金品位主要由2个对数正态分布总体叠加而成,并对应于本区2次主要的成矿事件。对金的特征参数垂直空间上的研究表明,金矿化强度向深部逐渐增高,深部找矿远景很大。Variation of geological variables is closely related to characteristics of geological body. Statistics of the geological variables could reveal certain regularity of the geological body. Result of mathematical statistics of multiple geological events is manifested by several generally overprinted mixture distributions. Therefore, statistics of characteristics of the mixture distribution and single distribution is of guiding significance to understanding genesis, process and characteristics of mineralization. The statistical result shows that gold grade of Qiangma gold deposit is distributed in 2 overprinted logarithmic normal distribution overalls and the overalls are correspondent to two major geological events taken place in the area. Study on the vertical variation of the characteristic parameter shows that mineralization is intensified to depth and further exploration should be continued to depth of the gold deposit

关 键 词：金品位 对数正态分布 混合总体筛分 特征参数 枪马金矿 河南省 

分 类 号：P628.2[天文地球—地质矿产勘探] P618.51[天文地球—地质学]