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内蒙古乌奴格吐山斑岩铜钼矿床(以下简称乌山矿床)位于中、蒙、俄三国交界的满洲里-新巴尔虎右旗一带。该矿床是1979年由黑龙江冶金地勘706队发现的,截止到2006年,已探明铜金属量185.1万吨,钼金属量40.4万吨,属于大型铜钼矿床。本文对矿区露天采坑内不同期次石英脉中的辉钼矿进行了精确的Re-Os同位素测年,获得了精确的成矿年龄,并对成矿物质的来源进行了初步探讨。
The Wuhuogushan porphyry copper-molybdenum deposit in Inner Mongolia (hereinafter referred to as the “Wushan deposit”) is located in the Manchurian-Xinbaerhuyouqi area at the junction of China, Mongolia and Russia. The deposit was discovered in 1986 by the team of metallurgical geological prospecting of 706 in Heilongjiang Province. As of 2006, 18.51 million tons of copper metal and 40.4 million tons of molybdenum metal have been proved, belonging to the large copper-molybdenum deposit. In this paper, accurate Re-Os isotope dating of molybdenite in quartz veins in different periods of open pit excavation in mining area has been carried out, the exact metallogenic age has been obtained, and the source of ore-forming materials has been discussed.