A Study On The Metallogenic Regularity Of Major Mineral Resourcess In The Arctic

The Arctic region includes the Arctic Ocean and its surrounding islands,Eurasia and North America.Structurally,it is located in the northern part of the metallogenic region of Lawa and the Pacific Rim,covering an area of 21 million km2,of which the land area is nearly 8 million km2,accounting for 38% of the total area.Rich in mineral resources,it is an excellent object for overseas large-scale mineral resources development cooperation.This study collected 363 large-scale deposits in the Arctic,analyzed the distribution of large-scale minerals in the Arctic,further divided the metallogenic zone,summarized the space-time and special laws,evaluated the availability of large-scale minerals in the Arctic,and served China's Arctic strategy and related enterprises through the methods of scale division,ore point mapping,research on the geological characteristics of typical deposits and development status.The results of this study are as follows:(1)The bulk minerals in the Arctic include copper mine(130,1275 million tons),iron mine(119,16.721 billion tons),lead zinc mine(53,220 million tons),aluminum mine(14,1.014 billion tons),manganese mine(18,6.081 billion tons),phosphate mine(17,15.492 billion tons)and sulfur mine(12,7.06 billion tons),which are distributed in Norway,Sweden,Finland,Russia,the United States,Canada and Denmark(Greenland).(2)The Arctic region can be divided into two grade I metallogenic zones and ten grade II metallogenic zones.Most of the bulk deposits are distributed in Hudson mine(30 copper mines,196 million tons in total;28 iron mines,7129.73 million tons in total)and Baltic metallogenic area(67 copper mines,76.137 million tons in total,84 iron mines,8270.55 million tons in total).There are many types of mineralization.The main types are banded iron bearing building,Mississippi Valley and jet sedimentary.(4)The age of the formation of the major ore deposits in the Arctic area is concentrated in the Paleoproterozoic,Mesoproterozoic and early Paleozoic.The Archean mainly formed banded iron bearing building iron ore and magmatic rock type copper nickel ore.the Proterozoic mainly formed the Mississippi River valley type lead zinc ore and sedimentary phosphorite type iron ore.the Paleozoic mainly formed the sedimentary jet type lead zinc ore and sedimentary type iron and phosphate ore deposits,and the meso Neoproterozoic mainly formed the sedimentary jet type lead zinc ore and sedimentary type iron and phosphate ore deposits In the Cenozoic,magmatic copper nickel deposits were mainly formed.(5)In addition to the temporal and spatial laws,the large-scale deposits in the Arctic region also show consistency in the number,distribution and metallogenic age of the deposits,conglomeration in the metallogenic type and background,and regional characteristics in different metallogenic regions(North American metallogenic region and Eurasian metallogenic region).(6)In terms of resources,government policies,traffic conditions,climate conditions,population distribution and other aspects,the availability of bulk minerals in the Arctic region is good and in line with the future development trend,which deserves the attention of Chinese enterprises.