CAJ | 학술논문

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75X190m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。
귀주정봉현수은동금광시검서남지구일개중요화전형적미세침염형（즉잡림형）금광。본문이용수학지질방법대수은동금광상적광체수학특정진행료초보연구。광석품위적통계분포특정표명，금광석품위분포위전형적혼합분포，설명해광상위다차성광작용첩가적산물。통과대혼합총체진행사분획득량개단일총체，타문분별대응량차성광작용，즉성암기적금예부집화열액기적금첩가성광，기중후자성광강도대단불균균，전자성광강도소단교균균。대광체자상관특정적변이함수모의결과표명，대해광상진행감탐시가취연광체주향화경향방향포치적구형감탐망，제출금후광산화외위적감탐가이사용비목전망거경관적망거，즉75X190m망거래공제광체，저장대대강저감탐성본。추세면분석결과표명，수착표고적강저，즉왕심부방향광석품위적평균치화변이계수균정현명현적하강추세，설명향심부방향광화정도감소，이광화변득교균균。결합광구목전적감탐정황화추세면분석결과，인위회가보배사적북익시광구급기외위진일보조광화감탐적중점구역。
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 of mineralization. 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 stage mineralization is dominant in terms of gold resource at the deposit. Results from modeling of spatial variation for gold ore bodies indicate that it is appropriate to adopt an exploration grid of 75×190 m, which is much less dense than the present exploration grid, and therefore more economic. Results of trend analysis reveal that both average and variation of gold grade are decreasing towards depth. This implies that gold mineralization tends to diminish but be homogeneous. When combined with existing data, results from this study suggest that the area of the north limb of the Huijiabao anticline is the most potential target in the future exploration.