三岔沟金矿区钼矿成矿时代及中条山区找矿方向的研究

利用Re-Os同位素测年方法对我国著名的中条山多金属成矿带三岔沟金矿区的辉钼矿进行了年龄精测，获得了 1823±23Ma 的新数据。这一结果表明三岔沟金矿中的辉钼矿形成于古元古代晚期。结合前人获得的中条山铜矿峪铜矿区的辉钼矿Re-Os年龄，可以认为，中条运动（吕梁期）是中条山地区一个重要的钼成矿期。因此，吕梁期辉钼矿Re-Os年龄的获得，一方面证实了前寒武纪成矿期的存在，另一方面也为该地区寻找钼矿及变斑岩型铜钼矿指出了找矿方向。

Ore-forming Age of Molybdenite of the SanChagou Gold Deposit

Sanchagou gold deposit is located in Zhongtiao Mountain which is the famous polymentallic mineralization belt in China. Through Re-Os isotopic method ,the isotope age of molybdenite is identified, obtained the new data of 1823±23Ma.the result indicated that molybdenite from Sachagou gold deposit formed in the transitional period of the Paleoproterozoic era later.Considing the molbdenite Re-Os age of copper deposits in the Zhngtiao Mountain area which the predecessors obtained, we believe that the Zhongtiao Movement (the period of Luliang ) is the important molybdenum metallogenic period. Therefore ,the Re-Os age of molybdenite in the Luliang period not only confirmes the Pre-Cambrian metallogenic period existence,but also indicate the prospecting direction to find out molybdenum deposit and the metamorphic porphyry-type copper-molybdenum ore in this area.