PRIMARY HALO ZONING AND DEEP PREDICTION OF THE MAIN ORE BELT IN HUACHANGGOU GOLD DEPOSIT, WESTERN QINLING MOUNTAINS
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摘要:
为了解铧厂沟金矿原生晕分布规律、提高找矿勘查效率，对铧厂沟金矿的原生晕进行了元素相关性分析、R型聚类分析以及因子分析等，并结合了野外工作及前人研究成果，得到铧厂沟金矿床理想的分带组合：前缘晕为As-Te-Sb-Hg，近矿晕为Ag-Au-Bi-Pb-Zn-Se，尾晕为Sc-Co-Ni-Mo-Cu-Cd-Mn.铧厂沟金矿的主矿带分带顺序为：Sc-Se-Mn-Cu-Cd-Ni-Zn-Ag-Au-Pb-Sb-Mo-Te-Co-Bi-Hg.结合原生晕理想的叠加模型，得到矿体从1150中段至990中段呈现不连续现象，表现为在1070中段以及下部矿体延伸至1030中段附近出现尖灭.新矿体从1030中段再次出现往下部延伸至990中段附近，并且存在往深部延伸的趋势.
Abstract:To know about the distribution rule of primary halo in Huachanggou gold deposit and improve the efficiency of prospecting and exploration, the paper makes the element correlation analysis, R-mode cluster analysis and factor analysis of the primary halo, combined with the field survey and previous research results, and obtains the ideal zoning combination of Huachanggou gold deposit as follows: As-Te-Sb-Hg for the front halo, Ag-Au-Bi-Pb-Zn-Se for the near-ore halo and Sc-Co-Ni-Mo-Cu-Cd-Mn for the rear halo, with Sc-Se-Mn-Cu-Cd-Ni-Zn-Ag-Au-Pb-Sb-Mo-Te-Co-Bi-Hg as the zoning sequence of main ore belt. Combined with the ideal model of primary superimposed halo, it is concluded that the orebody is discontinuous from Level 1150 m to Level 990 m, that is, the orebody extending from Level 1070 m downward and pinching out near Level 1030 m, then appearing again from Level 1030 m to Level 990 m, showing a tendency of deep extension.
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Key words:
- primary halo /
- geo-mathematical analysis /
- axial zonation /
- gold deposit /
- Shaanxi Province
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表 1 主矿带元素相关系数
Table 1. Correlation coefficients of elements in the main ore belt
元素 Au Ag As Bi Cd Co Cu Hg Mn Mo Ni Pb Sb Sc Se Te Zn Au 1 0.805 0.403 0.275 -0.027 0.069 -0.005 0.417 -0.140 0.021 -0.098 0.247 0.062 -0.268 -0.307 0.406 0.151 Ag 0.805 1 0.386 0.243 -0.077 0.085 0.025 0.484 -0.156 0.005 -0.058 0.211 0.080 -0.198 -0.232 0.425 0.080 As 0.403 0.386 1 0.581 0.166 0.128 -0.009 0.432 -0.251 0.000 -0.220 0.695 0.186 -0.431 0.046 0.901 0.176 Bi 0.275 0.243 0.581 1 -0.104 0.174 -0.061 0.406 -0.191 0.039 -0.045 0.849 0.115 -0.511 0.017 0.760 0.097 Cd -0.027 -0.077 0.166 -0.104 1 0.255 -0.003 0.112 0.449 0.345 0.219 0.064 0.192 0.143 0.178 -0.021 0.575 Co 0.069 0.085 0.128 0.174 0.255 1 0.207 0.096 0.401 -0.088 0.702 -0.029 0.279 0.590 0.161 0.097 0.451 Cu -0.005 0.025 -0.009 -0.061 -0.003 0.207 1 0.004 0.234 -0.171 0.118 -0.036 0.127 0.317 -0.023 0.048 0.061 Hg 0.417 0.484 0.432 0.406 0.112 0.096 0.004 1 -0.153 -0.049 -0.150 0.371 0.631 -0.333 0.056 0.426 0.195 Mn -0.140 -0.156 -0.251 -0.191 0.449 0.401 0.234 -0.153 1 0.205 0.425 -0.261 0.029 0.512 0.070 -0.268 0.265 Mo 0.021 0.005 0.000 0.039 0.345 -0.088 -0.171 -0.049 0.205 1 -0.214 0.029 -0.066 -0.169 0.136 0.043 0.376 Ni -0.098 -0.058 -0.220 -0.045 0.219 0.702 0.118 -0.150 0.425 -0.214 1 -0.275 0.032 0.557 0.047 -0.200 0.173 Pb 0.247 0.211 0.695 0.849 0.064 -0.029 -0.036 0.371 -0.261 0.029 -0.275 1 0.031 -0.632 -0.046 0.781 0.157 Sb 0.062 0.080 0.186 0.115 0.192 0.279 0.127 0.631 0.029 -0.066 0.032 0.031 1 0.108 0.479 0.119 0.212 Sc -0.268 -0.198 -0.431 -0.511 0.143 0.590 0.317 -0.333 0.512 -0.169 0.557 -0.632 0.108 1 0.219 -0.526 0.119 Se -0.307 -0.232 0.046 0.017 0.178 0.161 -0.023 0.056 0.070 0.136 0.047 -0.046 0.479 0.219 1 -0.001 0.001 Te 0.406 0.425 0.901 0.760 -0.021 0.097 0.048 0.426 -0.268 0.043 -0.200 0.781 0.119 -0.526 -0.001 1 0.120 Zn 0.151 0.080 0.176 0.097 0.575 0.451 0.061 0.195 0.265 0.376 0.173 0.157 0.212 0.119 0.001 0.120 1 
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表 2 主矿带因子载荷矩阵
Table 2. Factor loading matrix of the main ore belt
元素 F1 F2 F3 F4 F5 Te 0.89 0.16 0.00 -0.05 -0.27 Pb 0.83 0.05 0.20 -0.02 -0.39 As 0.82 0.23 0.05 -0.05 -0.16 Bi 0.78 0.15 0.06 -0.11 -0.42 Sc -0.73 0.48 -0.27 -0.11 -0.01 Hg 0.62 0.32 -0.08 -0.26 0.47 Au 0.57 0.14 -0.48 0.37 0.36 Ag 0.56 0.15 -0.52 0.28 0.39 Co -0.10 0.83 -0.27 -0.06 -0.26 Zn 0.11 0.67 0.27 0.40 0.08 Cd -0.09 0.64 0.45 0.28 0.09 Ni -0.39 0.58 -0.34 0.01 -0.33 Mn -0.45 0.56 0.06 0.25 -0.10 Mo 0.04 0.14 0.63 0.50 0.20 Cu -0.11 0.28 -0.34 -0.17 -0.13 Sb 0.17 0.50 0.10 -0.61 0.47 Se -0.09 0.30 0.49 -0.59 0.13
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表 3 主矿带方差极大正交旋转矩阵
Table 3. Varimax orthogonal rotation matrix of the main ore belt
元素 F1 F2 F3 F4 F5 Pb 0.93 -0.15 0.04 0.05 -0.01 Te 0.90 -0.04 0.25 -0.01 0.08 Bi 0.90 0.02 0.06 -0.03 0.04 As 0.81 -0.04 0.25 0.08 0.17 Co 0.14 0.86 0.06 0.26 0.15 Ni -0.11 0.82 -0.07 0.11 -0.10 Sc -0.56 0.71 -0.15 0.09 0.09 Cu -0.01 0.48 0.05 -0.14 0.07 Ag 0.19 0.01 0.89 -0.02 0.03 Au 0.22 -0.02 0.89 0.04 -0.04 Cd 0.01 0.17 -0.07 0.80 0.18 Zn 0.14 0.21 0.17 0.77 0.08 Mo -0.01 -0.38 -0.04 0.75 -0.06 Mn -0.25 0.50 -0.13 0.50 -0.07 Sb 0.05 0.15 0.11 0.06 0.92 Se 0.02 0.01 -0.44 0.13 0.70 Hg 0.34 -0.07 0.52 0.03 0.62
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表 4 主矿带因子贡献百分比
Table 4. Factor contribution percentage of the main ore belt
因子 载荷矩阵 方差极大正交旋转矩阵 特征值 累积特征值 特征值 累积特征值 F1 27.91 27.91 22.16 22.16 F2 18.28 46.19 15.60 37.76 F3 10.85 57.04 13.45 51.21 F4 9.50 66.54 12.88 64.09 F5 8.45 74.99 10.90 74.99
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表 5 主矿带地球化学元素分带指数
Table 5. Geochemical element zoning index of the main ore belt
采样位置 990中段 1030中段 1070中段 1110中段 1150中段 Au 0.0184 0.0117 0.0093 0.0084 0.0112 Ag 0.1025 0.0502 0.0224 0.0257 0.0600 As 0.0709 0.0673 0.0185 0.0216 0.0223 Bi 0.1270 0.1024 0.0263 0.0414 0.0422 Cd 0.0133 0.0213 0.0210 0.0235 0.0176 Co 0.0591 0.0592 0.0915 0.0638 0.0831 Cu 0.0980 0.0908 0.1189 0.1266 0.1152 Hg 0.0440 0.1356 0.0204 0.0271 0.0323 Mn 0.0224 0.0226 0.0328 0.0336 0.0340 Mo 0.1028 0.0314 0.1166 0.1613 0.0914 Ni 0.0586 0.0310 0.1750 0.0913 0.1533 Pb 0.0342 0.0452 0.0131 0.0196 0.0121 Sb 0.0222 0.0554 0.0320 0.0217 0.0519 Sc 0.0280 0.0097 0.0722 0.0659 0.0717 Se 0.0378 0.0490 0.0307 0.0915 0.0585 Te 0.0220 0.0203 0.0050 0.0095 0.0068 Zn 0.1386 0.1969 0.1943 0.1675 0.1365
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表 6 主矿带勘探线原生晕轴线分带序列
Table 6. Primary halo axis zoning sequence of exploratory lines in the main ore belt
勘探线 轴向分带序列 36线 Hg-Bi-Pb-Ag-Te-Mo-Zn, Cu-Sc-Co-Cd-Mn-Sb-Ni-Se-Au-As 40线 Au-Sc-Te-Se-Ag, Sb-Mo-Mn-Bi-Hg-Pb-Cd, Co-As-Ni-Cu-Zn 44线 Cd-Ag-As, Hg-Pb-Mo-Se, Au-Cu-Sc-Co-Ni-Mn-Zn-Bi-Te-Sb 48线 Sb-Hg-As-Bi-Mo-Se-Cd-Ag, Au-Co-Mn-Cu-Sc-Ni-Pb-Zn-Te 56线 Hg-Sb-Zn-Au-Ag-Sc, Se-Pb-Bi-Mo-Te-As-Cd-Mn-Ni-Co-Cu 60线 Se-Cu-Pb-Zn-Te-Cd-Au-Co-As-Bi-Ni-Sc, Mo-Mn-Ag-Hg-Sb 62线 Cu-Te-As-Bi-Se-Ag-Ni, Mn-Mo-Hg-Sb-Zn-Au-Co-Cd-Sc-Pb 64线 Sc-Mo-Ni-Mn-Se-Zn-Cd-Co-Cu, Ag-As-Te-Bi-Au-Hg-Pb-Sb 66线 Cd-Mn-Sc-Zn-Hg-Ni-Cu-Sb, Bi-Te-Mo-Co-Ag-As-Au-Se-Pb 68线 Sc-Se-Cd-Mo-Mn, Ag-Cu-Au-Sb-Te-Bi-As-Hg-Pb-Co-Ni-Zn 70线 Sc-Ni-Mn-Cu-Co-Cd-Se-Zn, Bi-Au-Te-As-Ag-Pb-Hg-Sb-Mo
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