Analysis Of Ore-forming Geological Conditions And Metallogenic Prediction Of Hadamengou Gold Deposit By Visualization

Hadamengou gold deposit was discovered in the 1980 s, it’s a large gold deposit features a wide development of potassium feldspar. it is also one of the largest gold mines in Inner Mongolia. Geologists had a deeper understanding of Hadamengou gold deposit, but largely based on the two-dimensional plane and the analysis of the experimental data, analysis in three-dimensional space is less, so in this paper,we collected data of 13 vein, establish the 3 D model of geological conditions under the surface of the earth, Analyze the metallogenic conditions of the ore bodies, ore body was affected mainly by strata, fault, granite pegmatite and alteration belt. The first rock group of Wulashan is the main mineral source of gold element, initial gold content is higher, the late affected by metamorphism, gold enrichment. The metamorphic strata of Wulashan mountain is the exclusive formation. Hadamengou gold deposit is tectonic controlling deposit. Piedmont fault is the main ore guide structure, the second-order faults control the form of ore body, NW faults are main ore-controlling structure. Late mineralization formed NNE and NE faults broken the ore body. Granite pegmatite provides the ore-body metallogenic temperature, pressure and impetus of fluid, promote the formation of ore bodies. alteration is more in the research area, hydrothermal metasomatic alteration is an important mineralization, potassium silicide altered rock and ore body is almost the same occurrence, same part of the ore body directly produced in altered rock, so, potassium silicified alteration can be used as an important prospecting marks.Based on analysis of geological conditions, factors layer were extracted using the method of comprehensive information metallogenic, calculate the weight value of each metallogenic factors, the weights of fault, granite pegmatite and altered rock are greater than zero, they are conducive to the formation of ore bodies. Among them, the quartz potassium feldspar veins of the weight value of 6.379, secondary fault structure weight value of 3.029, granite pegmatite weight value of 0.618, gold anomalies weight value of 1.329, based on these value, we marked out 7 mineralization potential areas. Some known orebody fell into the potential area, therefore, that method is effective. Established underground deep metallogenic information three-dimensional entity model of 13 vein by Surpac, we found the weight value under 418 m is high, combined with gold grade block model analysis of 13 vein and geochemical data of 13 vein, we found there are two Au enrich center between 418-1118 m level, under 418 m, Au grade value are on the rise and Ag, Bi, Pb, correlation is higher, in 418 m level interval the content of As, Sb, Hg is on the rise, the content of W、Ni、Co、Mo also existed, it means there may be a high gold grade mineralization exist.