摘要
地质体的形成是多期地质作用叠加的结果。地质样品分析数据表现为多个统计分布总体的叠加 ,对混合分布总体的筛分和单一分布总体的研究 ,便于矿床成因分析和资源的定量评价。经研究 ,峪耳崖金矿的金品位即由两个对数正态分布总体叠加而成。矿化体在不同部位上的统计分布参数不同 ,反映了垂向空间上矿化强度的变化。对各类矿化标志的研究表明 ,峪耳崖金矿床金矿化强度向深部逐渐增高 ,金品位值的变化向深部逐渐变小 ,深部找矿远景很大。
Geological bodies are formed by overprint of several geological processes. Data of geological samples′ chemical analysis generally show overlap of several statistical populations. Study on screening the mixed population is useful to analyze genesis of ore deposit and quantitative assessment of the deposit′s mineral resource. Data of Yuerya gold mine′s Au grades are composed of two lognormal distribution populations which are overprinted. Statistical distribution parameters are varied at different positions of mineralized bodies which reflects variation of mineralization intensity in the vertical extent. Studies on various mineralization marks reveal that in Yuerya Au deposit mineralization would be intensified to and gold grades gradually less variated to depth thus it is potential for further prospect to depth.
出处
《地质找矿论丛》
CAS
CSCD
2000年第2期142-150,158,共10页
Contributions to Geology and Mineral Resources Research
关键词
金矿床
金品位
统计
分布特征
地质意义
mixed distribution population
lognormal distribution
characteristic parameter
Au deposit
Hebei province.
