Geological Characteristics and Prospecting Potential of Sanhetun Gold Deposit in Heilongjiang Province
Received date: 2021-11-30
Revised date: 2022-03-07
Online published: 2022-10-31
Sanhetun gold deposit is a newly discovered small-sized deposit in Nenjiang City，Heilongjiang Province，which is located in the eastern part of Xing-Meng orogenic belt，at the intersections of Xing’an and Songnen blocks，and the convergence sites of Duobaoshan island arc belt，Nenjiang-Heihe tectonic mélange belt，Xinkailing micro-block and Taxi volcanic arc.In recent years，a lot of gold orebodies have been delineated in the mining area through the large-scale investigation of land and resources and mineral exploration，however，the genesis of ore deposits and ore types are lack of systematic research.Therefore，the comprehensive analysis are focused on the characteristics of orebodies and ores in the mining area，the ore-controlling characteristics of regional structures and the metallogenic characteristics of typical gold deposit.The results show that Sanhetun gold deposit occurs in the overlapping area between Cretaceous volcanic rocks，clastic sedimentary rocks and Early Carboniferous mylonitic granites，and the ore type is tectonic altered rock.The orebody overall strikes NE，inclines NW with slow dip angle.The wall rock alteration is mainly silicification and sericitization.The ore minerals are composed of pyrite，sphalerite，chalcopyrite with minor native gold and telluride.At present，the gold deposit are not completely controlled in the extension and depth direction，and there is still great metallogenic potential.The Nenjiang-Heihe tectonic melange belt is an important part of the next breakthrough of gold prospecting in Heilongjiang Province.
Bowen LI , Huajuan GU , Chenglu LI , Baoshan LIU , Xiaoping YANG . Geological Characteristics and Prospecting Potential of Sanhetun Gold Deposit in Heilongjiang Province[J]. Gold Science and Technology, 2022 , 30(4) : 508 -517 . DOI: 10.11872/j.issn.1005-2518.2022.04.184
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