Abstract
Gold is one of the most important strategic minerals in Qinghai province. Based on the metallogenic characteristics, types, ore control factors and spatial distribution of gold deposits, the metallogenic regularities of gold deposits were put forward. It’s divided the pre-Cambrian, Early Paleozoic, Late Paleozoic, Mesozoic and Cenozoic the metallogenic series assemblages, and also their distribution features are discussed which focus on five metallogenic periods. According to the theory of metallogenic series of ore deposits, combining with characteristics of typical gold deposits, twenty metallogenic series are preliminarily divided in Qinghai province. It is pointed out some suggestions about prospecting and exploration of gold deposits in Qinghai.
Highlights
It’s divided the pre-Cambrian, Early Paleozoic, Late Paleozoic, Mesozoic and Cenozoic the metallogenic series assemblages, and their distribution features are discussed which focus on five metallogenic periods
According to the theory of metallogenic series of ore deposits, combining with characteristics of typical gold deposits, twenty metallogenic series are preliminarily divided in Qinghai province
The contact type is mainly distributed in West Qinling, and The Associated gold ore is mainly distributed in the East Kunlun Metallogenic Belt to the west of Golmud
Summary
As of the end of 2015 (Report on Mineral Reserves Statistics in Qinghai Province in 2015, 2016), 354 gold deposite in Qinghai province, 208 mineral deposits with reserves. The province has a total of 782.56 tons of gold reserves. Rock gold accounted for 94.24%, shallow into medium-low temperature hydrothermal type accounted for 82.10%, marine volcanic rocks accounted for 3.19%, 5.21% skarn rock type, superposition type accounted for 3.74%, and Placer gold accounted for 5.76%. Placer gold deposits are found throughout the province, and are concentrated in the northern baiyenhara Metallogenic Belt, the southern baiyenhara Metallogenic Belt, and the northern Qilian Metallogenic Belt. In Qinghai province except Xining city, other 7 states (City) have different scale of gold distribution. Identified gold reserves in the top two is Haixi, yushuzhou, accounting for 75.13% of the total
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