湖北铜山口铜(钼)矿床矿石品位地质统计学意义  

Geostatistics Significance of Ore Grade in Tongshankou Copper(Molybdenum) Deposit,Hubei Province

作　　者：付乐兵[1] 张可清[1] 郭玲利[1] 孔令俊[1] 杨少卿[2] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]中国冶金地质勘查工程总局中南地质勘察院,湖北武汉430081

出　　处：《资源环境与工程》2008年第1期16-21,共6页Resources Environment & Engineering

摘　　要：铜山口铜(钼)矿床是鄂东南矿集区内典型的矽卡岩—斑岩复合型矿床。分析矿区内23个钻孔2 041个样品数据,得出矿床矿石品位服从三参数对数正态分布。如果Cu取0.1%为边界品位,仅Ⅰ号矿体可以新增储量175 486 t。矿体在各个方向都存在块金效应,块金常数大小不均,各方向的变异函数均存在不同程度的空穴效应,得出主矿体垂向变异函数模型,矿体垂向上在12 m以内的关联性较好;另外,变量的离散程度系数C0/C说明了矿体的空间分布的连续性较差。The Tongshankou Cu （Mo） deposit, located in ore concentration area of southeastern Hubei Province,is a typical skarn-porphyry compound deposit. Based on the analysis on data of 2041 samples in 23 drill holes,the authors draw the conclusion that, ore grade obey three parameters lognormal distribution in the deposit. It may increase 175,486 tons only in I orebody if the boundary grade can decrease to 0.1%. There exists nugget effect in each direction of Orebody and uneven sizes in nugget constant, the direction variation function has void effect in different degree, and vertical variation function model of main orebody is concluded, and relevance of orebody in vertical is relatively preferable within 12 m ; In addition ,dispersion degree coefficient of variable （C0/C） indicates the relatively low continuity of orebody＇ s spatial distribution.

关 键 词：品位-吨位模型 地质统计学 变异函数 铜山口铜(钼)矿床 

分 类 号：P618.41[天文地球—矿床学]