Primary Halos Characteristics and Prediction for Deep Mineralization in Dishuishan Gold Deposit，Gansu Province
Received date: 2014-08-17
Revised date: 2014-11-10
Online published: 2015-04-07
Dishuishan gold deposit，related to ductile-brittle shear zone of altered rock-host，is primarily occurred in littoral facies-neritic phase acidic volcanic clastic rock.On the basis of field geological work，the paper analyzes the trace elements of the samples of the drill hole in different geologic section，which located in Au2 orebody，with using geological and mathematical analysis methods，the paper carries through the analysis on the spatial distribution characteristics，the primary halo feature and the elemental association characterisitics of trace elements.The results showed that：On the basis of Grigoryan’s zonation indexes，the primary halo axial zoning sequence from the top to the deep part in No.141 and 175 geologic section are（Pb-As）-Au-Cu-Zn-Bi-Hg-Sb-Ag-Mo and（Hg-As-Au-Sb-Pb-Cu）-Zn-Mo-Ag-Bi respectively，which exists the mutual superposition of the front halo elements，proximal elements and tail halo elements；The correlation analysis，cluster analysis and factor analysis reveal that Au is closely related to Ag，and followed by the As，Sb in Au2 orebody，and determine the F1 main factors of Au in the Au2 orebody is Sb-As-Ag-Cu-Au-（Pb-Zn），which is the most favorable combination of elements for mineralization.According to the space distribution characteristics of each element，we consider that the mineralization is prospective in the deep portion of the Au2 orebody.
YANG Yongchun , LIU Jiajun , WANG Xueyin , WANG Zuogang , CHEN Jie . Primary Halos Characteristics and Prediction for Deep Mineralization in Dishuishan Gold Deposit，Gansu Province[J]. Gold Science and Technology, 2015 , 23(1) : 17 -23 . DOI: 10.11872/j.issn.1005-2518.2015.01.017
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