A Comparative Study On Ore-forming Setting And Metallogenic Regularity Of Tengchong-Tanintharyi Tin-Tungsten Metallogenic Belt Across The Sino-Myanmar Border

Tin and tungsten are significant strategic mineral resources in China. The exploration and development for tin and tungsten mineral resources in overseas target countries under the "Going-out" strategy can provide an important safeguard for China’s sustainable supply of resources. This paper has focused on the study of Tengchong-Tanintharyi tin-tungsten metallogenic belt across the Sino-Myanmar border, which is an important section of the giant Southeast Asian tin-tungsten metallogenic zone. By multidisciplinary information integration and geological comparison, the paper has summarized the regional geological structure features, analyzed the geological settings, and concluded the metallogenic regularities. With the results from the deep-probing anatomization of the typical mineral deposits, as well as the testing results of the rocks and mineral samples, the paper has also delineated the perspective prospecting targets and has evaluated the mineral resources potentials in the study areas. All these accomplishments have provided useful basic information for Chinese enterprises who are interested in tin and tungsten exploration and exploitation in Myanmar and Thailand as well as the neighboring areas.In this research, the author has systematically collected more than100items of geological and mineral resources data which are related to tin and tungsten resources of the study area, and has complied a sheet of1:1,000,000scale geological map, and has further constructed a tin-tungsten database for the study area which includes134tin-tungsten occurences and deposits. For theoretical research, the author has studied the relationship between granite rockbodies and the mineraliztaion of tin and tungsten; with the evidences from rocks and minerals testing results, the author concludes that S-type granite rockbodies show a closer relationship with the mineralization of tin and tungsten.The author has also researched ten domestic and overseas typical mineral deposits and systematically analyzed the regional spatial distribution regularites of the mineral resources in the study areas; according mainly to the internal ore-controlling factors and the spatial distribution of the mineral resources, as well as the geotectonic settings, the author has classified the study areas as the following3metallogenic belts:(1) Tengchong-Sagaing-Mogok Belt,(2) Three Pagodas-Ranong Belt, and (3) Lamphun-Kanchanaburi Belt. The author also concluded the temporal evolution of mineralization in the study area:the primary tin-tungsten metallogenic epoch is of Jurrasic-Paleogene; the eluvial-alluvial placer type metallogenesis is mainly of Quatenary; the metallogenic epochs of the whole metallogenic zone becomes younger from south to north and from east to west.According to field investigations and correlation of metallogenic regularities,5ore prospective areas were delineated, i.e. Mong Mit-Madaya W-Sn perspective area (in Myanmar), Pyinmana-Meibao W-Sn perspective area (in Myanmar), and Tha Sang Yang W-Sn perspective area (in Myanmar), Pilok W-Sn perspective area (from Myanmar to Thailand), and Ranong-Wan Guyenne W-Sn perspective area (from Myanmar to Thailand).The study area is of low degree of mineral exploration and resources exploitation; therefore, these areas have good mineral resources potentials. Right because of this, these areas are favorable choices for China’s mining companies, especially for exploring tin and tungsten resources. As for the5perspective targets delineated in this paper, China’s mining companies are encouraged to extend their activites in these areas. Understanding of metallogenic regularities obtained through the study has reference significance to probe the genesis of tin and tungsten resources within the territory of China.