摘要
通过对马泉金矿床主体(三、四号矿带)及外围矿带矿石品位分布资料的研究后认为:四号矿带金品位高于三号矿带,夹石含量少于三号矿带,易选矿石多于三号矿带,因而矿石质量优于三号矿带;外围矿带品位低于矿床主体品位,以低品位矿石为主。通过对矿石品位分布直方图(数学模型)的偏度系数和峰度系数概率(>95%)假设检验后认为:矿床主体品位分布概率曲线基本符合对数正态分布规律。通过对矿床平均品位算术平均值和变异系数的研究后认为:矿床属品位均匀型矿床,建议矿床的氧化矿石边界品位为0.5×10-6;原生矿石边界品位为1.0×10-6;特高品位下界为29.0×10-6。
The study to the data of ore grades distribution of main ore body （No. 3 and No. 4 ore zone） and adjacent ore zone show that the ore quality of No.4 ore zone is better than the ore of No.3 ore zone because it has higher gold grade, lower content of waste rock, more quantity of ore easier for mineral dressing than No.3 ore zone, the gold grade of adjacent ore zone are lower than the grade of main ore body. Probability cure of grades in main ore zone of deposit basically accord with lognormal distribution. The deposit is homogeneous grade type. It is suggested that marginal grade of oxidized ore shoule be determined as 0.5×10^4, primary ore as 0.5×10^-6, the extra high grade as 29.0×10^-6.
出处
《甘肃地质》
2009年第2期30-34,71,共6页
Gansu Geology
关键词
金矿品位
品位预测
对数正态分布
特高品位
马泉金矿
gold grade
prediction of gold grade
lognormal distribution
extra high grade
Maquan golddeposit
