青海多才玛铅—锌—银矿床矿石品位与体重的回归模型

青海多才玛矿床是一个新近查明的超大型铅—锌—银矿床。利用150个钻孔岩芯样品的矿石品位及其体重数据进行相关分析和回归分析,相关分析结果表明,铅矿石和铅—锌矿石品位与体重呈高度正相关(相关系数分别为r=0.94和r=0.90),锌矿石品位与体重不相关(r=0.09);根据铅矿石和铅—锌矿石品位与体重的回归方程计算了矿区各矿石块段的平均体重。回归模型准确、直观阐释了品位—体重的相关性,对沱沱河地区有相似成矿背景的其它矿床提供借鉴依据。

Regression Model of Ore Grade and Weight of Duomacai Pb-Zn-Ag Deposit in Qinghai Province

The Duocaima ore deposit is a super-large Pb-Zn-Ag deposit newly found in Qinghai. With both the ore grade and specific gravity data obtained from the 150 drill core samples, this paper conducted the correlation and regression analysis between the Pb ore grade and specific gravity, between the Pb-Zn ore grade and specific gravity, and between the Zn ore grade and specific gravity. The results show that there are high correlations between the Pb ore and specific gravity, and between the Pb-Zn ore and specific gravity (with correlation coefficients 0.94 and 0.90, respectively), however, no correlations between the Zn ore and specific gravity. Based on the regression equations established, the specific gravities were calculated for the all blocks of various ore types within the deposit. Regression model explain the correlation between grade and weight accurately and intuitively, which provides the basis for reference to other deposit of similar mineralization background in Tuotuohe area..