| 黔西南水银洞金矿床矿体数学特征及其勘查意义 |
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| 引用本文： | 贾晓芳,郭义平,贾志斌,郭仁旺.黔西南水银洞金矿床矿体数学特征及其勘查意义[J].西部资源,2011(3):62-67. |
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| 作者姓名： | 贾晓芳 郭义平 贾志斌 郭仁旺 |
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| 作者单位： | 内蒙古第四地质矿产勘查开发院;内蒙古自治区地质调查院; |
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| 摘 要： | 贵州贞丰县水银洞金矿是黔西南地区一个重要和典型的微细浸染型(即卡林型)金矿。本文利用数学地质方法对水银洞金矿床的矿体数学特征进行了初步研究。矿石品位的统计分布特征表明,金矿石品位分布为典型的混合分布,说明该矿床为多次成矿作用叠加的产物。通过对混合总体进行筛分获得两个单一总体,它们分别对应两次成矿作用,即成岩期的金预富集和热液期的金叠加成矿,其中后者成矿强度大但不均匀,前者成矿强度小但较均匀。对矿体自相关特征的变异函数模拟结果表明,对该矿床进行勘探时可取沿矿体走向和倾向方向布置的矩形勘探网,提出今后矿山和外围的勘探可以使用比目前网距更宽的网距,即75×190m网距来控制矿体,这将大大降低勘探成本。趋势面分析结果表明,随着标高的降低,即往深部方向矿石品位的平均值和变异系数均呈现明显的下降趋势,说明向深部方向矿化程度减小,而矿化变得较均匀。结合矿区目前的勘探情况和趋势面分析结果,认为灰家堡背斜的北翼是矿区及其外围进一步找矿和勘探的重点区域。
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| 关 键 词： | 矿石品位 数学特征 混合分布 变异函数 趋势面分析 水银洞金矿 |
The mathematic characteristics of the ore bodies from the Shuiyindong gold deposit,southwestern Guizhou Province |
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| JIA Xiao-fang GUO Yi-ping JIA Zhi-bing Fourth Institute of Geology , Mineral Exploration of Inner Mongolia,Jining, Inner Mongolia.The mathematic characteristics of the ore bodies from the Shuiyindong gold deposit,southwestern Guizhou Province[J].Western Resources,2011(3):62-67. |
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| Authors: | JIA Xiao-fang GUO Yi-ping JIA Zhi-bing Fourth Institute of Geology Mineral Exploration of Inner Mongolia Jining Inner Mongolia |
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| Institution: | JIA Xiao-fang GUO Yi-ping JIA Zhi-bing Fourth Institute of Geology and Mineral Exploration of Inner Mongolia,Jining,012000 Inner Mongolia |
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| Abstract: | This paper reports mathematic characteristics of ore bodies from the Shuiyindong gold deposit,southwestern Guizhou Province,which is a typical Carlin-type gold deposit.It is shown that gold contents of the ores have a typical mixture distribution,indicating two stages ofmineralization.The first stage reflects pre-enrichment of gold in relation to diagenesis of the host rocks,and the second stage marks overprint of auriferous fluids.The second stagemineralization is dominant in terms of gold resource at the ... |
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| Keywords: | ore grade mathematical characteristics mixture distributionvariation function trend analysis Shuiyindong gold deposit |
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