THE FORMING CONDITIONS OF NONFERROUS AND PRECIOUS METAL DEPOSITS IN THE NORTH OF DERBUGAN METALLOGENIC PROVINCE
ZHANG Jiong-fei1,2, WANG Xian-zhong3, QUAN Heng1, WU Guang1, ZHU Hong-chen1
1. Shenyang Institute of Geology and Mineral Resources, Shenyang 110033, China; 2. Institute of Resources and Civil Engineering, Northeast University, Shenyang 110004, China; 3. Dayan Geology and Investigation Company, Hailar 021122, China
Abstract：The north of Derbugan metallogenic provice is located in the north of Inner Mongolia Autonomous Region and the north of Heilongjiang Provice.The principal metallogenetic epoch is J 3-K 1.The metallogenic temperatures vary for different genetic types of deposits.Porphyry-type deposits are formed at high-medium temperature;volcanic hydrothermal type,at medium-low temperature;while "New-type" and epithermal type,at low temperature.The sulfur isotopic values of δ34S form 8 deposits show a high concentration on -6‰ to +6‰.The peak values are around +2‰ to +6‰,indicating that the sulfur in the endogenetic polymetals,gold and silver deposits comes mainly form anatectic magma.The oxygen isotopic values of δ18O from 6 deposits are -4.5‰ and +23.9‰,showing a close relationship to the magmatic oringin.According to the hydrogen isotope of inclusion, the δ18O H2O values range from -12.9‰ to +12.6‰,and the δD is mainly in -89‰ to -105‰.Therefore,the oxygen and hydrogen isotopes of ore-bearing hydrothermal solution reflect the characteristics of magmatic water mixed with miscible fluids from surface precipitation,but the epithermal deposits are characterized by meteoric water.The analysis shows that the metallogenic hydrothermal solution of the deposits is derived from magmatic solution and geothermal brine.
张炯飞, 王显忠, 权恒, 武广, 祝洪臣. 得尔布干成矿区(北片)成矿条件初步研究[J]. 地质与资源, 2001, 10(4): 220-225.
ZHANG Jiong-fei, WANG Xian-zhong, QUAN Heng, WU Guang, ZHU Hong-chen. THE FORMING CONDITIONS OF NONFERROUS AND PRECIOUS METAL DEPOSITS IN THE NORTH OF DERBUGAN METALLOGENIC PROVINCE. GEOLOGY AND RESOURCES, 2001, 10(4): 220-225.
2001, Vol. 10 
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