应用模糊集合论圈定找金靶区

本文依据岩浆岩常量评价因子的系统分析和建立在模糊集合论基础上的矿化隶属度研究,得到了能识别包括金在内的10种多金属矿(Au、Cu、Mo、U、W、REE、Nb-Ta、Be和Sn)的母岩的方法。以江苏省岩浆岩为例,计算了有关岩体的金矿化隶属度,划分了4级找金靶区,对指导找矿起到了积极作用。作者用该法对一些著名产金矿岩浆岩的化学成分所作的研究表明,所设计的两类与金矿化隶属度有关的数学模型及其聚类中心是合理的、准确的。

DELINEATION OF GOLD TARGET BY FUZZY SET THEORY

The method is obtained through the systematic analysis of evaluation factor in magmatite. According to the results on calculation of the grade of membership for mineralization by fuzzy set theory, it can identify tens of host rocks in metal ore including gold. The analysis of chemical components in magmetite from some well known gold deposits has been conducted by the authors. It shows that this method and cluster center desigoned by the authors which are related to grade of membership for gold mineralization are reasonable and accurate. The authors take magmetite in Jiangsu Province as an example, to calculate the grade of membership for gold mineralization and define four kinds of gold prospecting target areas, which play a positive role in guiding the prospecting.