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[an error occurred while processing this directive]Application Effect of Rock Debris Geochemical Survey in Prospecting in Sandaowanzi Shallow Overburden Area,Heilongjiang Province
Received date: 2021-12-01
Revised date: 2022-05-29
Online published: 2022-12-10
The Sandaowanzi area is a typical shallow overburden area which hosts numerous gold polymetallic ore deposits in Heilongjiang Province,China.More than 10 gold deposits and ore occurrences have been found in the area,such as Sandaowanzi gold deposit,Beidagou gold deposit,Najinkouzi gold deposit,340 highland gold deposit,Sandaowanzi Nanshan gold deposit,etc.,with great prospecting potential.Many soil geochemical surveys have been carried out in the area,but no prospecting breakthrough has been made.Through the comparative tests of various sampling grids,grain sizes and horizons in the study area,the best geochemical sampling method was confirmed,and the 50 m×50 m gridded rock debris geochemical survey method was adopted.Based on the correlation analysis of geochemical characteristics and element symbiotic assemblage characteristics,and combined with regional ore-forming geological conditions,30 comprehensive anomalies were delineated.The main ore-forming elements Au and Ag are strongly enriched in favorable structural areas.Through anomaly verification,12 gold-silver orebodies and 23 gold orebodies have been found,and 3 prospective areas have been delineated,and good prospecting results have been obtained.The study shows that rock debris geochemical survey in Sandaowanzi area can quickly and accurately delineate the range of mine-ralization alteration and improve the prospecting effect,which is an effective prospecting method.It can provide an important reference for ore prospecting in the same type of forest swamp geochemical landscape area.
Yupeng ZHANG , Dongyan SHI , Mingqi LV , Chenglu LI , Kun ZHANG , Wei TANG . Application Effect of Rock Debris Geochemical Survey in Prospecting in Sandaowanzi Shallow Overburden Area,Heilongjiang Province[J]. Gold Science and Technology, 2022 , 30(5) : 651 -663 . DOI: 10.11872/j.issn.1005-2518.2022.05.173
http://www.goldsci.ac.cn/article/2022/1005-2518/1005-2518-2022-30-5-651.shtml
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