| Carlin type gold deposit is one important type of gold deposit at home and abroad. At present, Carlin type gold deposit resources have accumulated more than 1000t, the type of deposit also has become an important gold resource. Yunnan-Guizhou-Guangxi border area is a major gold deposits which was found in concentrated areas in 20 years, the main types of gold deposit is Carlin type. Dawan area is located in Funing gold deposit in Yunnan, Guizhou Golden Triangle area, the Fu Ning gold deposit has been mined area for many years,the resources of gold deposit has been an increasing depletion, the urgent need to continue to look for sustainable exploitation of deposits around the gold deposit.Through the collection of basic geological data of Dawan Area, surveying the 1:10000 geochemical soil around the mine, applying cluster analysis, principal factor analysis and other traditional methods of mathematical geology of the symbiotic combination of the elements regularity, and using the main factor scores to represent the exception forming elements of the combination of abnormalities. Compared to the traditional method and multifractal statistical methods of summation to the study area forming elements within the field of geochemical anomalies in geochemical anomaly threshold, and geochemical anomalies within the study area to make assessment of the geological features of its exploration Prospects. The results show that:(1) The results of cluster analysis and factor analysis is consistent, Cu, Co, Ni is part of the same class, and factor analysis of the F1 factor corresponds; As, Au, Sb, Hg is part of the same class, and factor analysis of the F2 factor corresponds.(2) The combination of this area is mainly forming elements As, Au, Sb, Hg, As-Au is temperature element, and the main ore-forming elements, Sb, Hg may be the associated elements. (3) 7 elements in the study area by using multifractal methods is higher than anomaly threshold of the traditional method of anomaly threshold, Au element does not have multifractal characteristics. We can use fractal Method anomaly threshold of the element of multifractal characteristics .(4) The study of anomaly map in the area shows that the abnormal area which was determined by the fractal method is small, and associated closely with the structure, mineralization point.(5) Major regional gold anomaly in the study area is divided into three regions: the west of the Long Sanpan, the south of Long Sanpan and Nasang that abnormal area are 1.0,0.38,0.5 square kilometers. Along northwest the fault distribution, indicating that the formation of gold mineralization may be related to this fault runs through the region have very close relationship.(6) The distribution of Au, As, Hg, Sb integrated abnormal area and gold anomalies abnormal area is consistent. The abnormal area are 2.5,0.68,0.87 square kilometers. Related to good mineralization conditions,Dawan construction fully developed, basic rock strongly actived,; The anomalies of the main mineralization elements and mineralization points are closely connected, gold mineralization belt are an extension of the trend in northwest,southeast . The Prospect is good... |
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