贵州水银洞金矿矿层矿化分析与深部预测

Analysis of Mineralization and Prospecting of Deep Gold Deposit in Shuiyindong, Guizhou

水银洞金矿为滇黔桂“金三角”最重要的金矿床,是典型的卡林型层控金矿床.运用绘制等高线图和含矿层矿化分布图的方法,对水银洞矿床0-427勘探线的钻孔数据分析,并用surfer 软件绘制矿层的顶底板和地层矿化趋势的模拟图,重点分析了含矿地层的构造形态和矿化规律,结果显示：界面等高线反应背斜的形态,水银洞矿区背斜的高点和背斜倾伏端是金矿的主要赋存位置;Sbt（构造蚀变体） 与上部龙潭组矿化值有负相关效应;水银洞矿化整体具有不均匀性,Sbt向东南延伸且在东西向具有弱-强-弱的富集规律.Sbt矿化强度在东西向具有弱-强-弱的规律,而龙潭组地层中的矿化与Sbt呈现一定负相关效应,在背斜倾伏端龙潭组矿化度开始增强,预示深部地层可能还会有大规模的工业矿体存在.

The Shuiyindong gold deposit is one of the most important gold deposits in Yunnan-Guizhou-Guangxi"golden triangle"area, southwestern China and it is a typical Carlin-type strata-bound gold deposits. In this study, we analyzed the borehole data of No.0~427 prospecting line by drawing a contour map and a distribution map of mineralization trending degree in ore-bearing strata. The study uses the Surfer software to draw the simulation diagram of deposits boundary and the mineralization trend. The study is focused on analyzing the structure geometry and mineralization pattern of ore-bearing strata in the Shuiyindong mining area. Our analysis reveals that interface contour line reflects the shape of the anticline. Also, the main locations of gold deposits are at the hinge area of the anticline and the plunging end of the anticline in the Shuiyindong gold deposit. There existed a negative correlation between Sbt (structurally altered rock body) and the upper part of the Longtan Formation in the mineralization degree;and the mineralization of the Shuiyindong gold deposit shows obvious inhomogeneity; In addition, the mineralization degree of Sbt has a regular distribution of a weak-strong-weak pattern along the east-west directionn and the mineralization degree in the Longtan Formation shows a negative correlation with the SARB. The mineralization degree is enhanced at the plunging end of the anticline in the Longtan Formation, suggesting that a large-scale industrial ore body may exist in the deep part of the strata.