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云南腾冲新岐钨锡多金属矿产于钠长变花岗岩体中,矿化类型主要为石英脉型,次为云英岩型。对矿区含矿石英脉中8个辉钼矿样品进行了Re-Os同位素测定,首次获得了新岐地区精确的成矿年龄为68.6±3.9Ma。该区与成矿密切相关的晚期古永岩体和早期新岐岩体成岩年龄为72~65Ma。在误差允许范围内,可认为该区钨锡多金属矿的成矿与成岩同期,成矿时代同时或稍晚于成岩时代。
Xinchuan tungsten-tin polymetallic mineral in Tengchong, Yunnan is mainly composed of quartz vein type and sub-fullerene type. The Re-Os isotopic measurements of eight molybdenite samples from the ore-bearing quartz veins were carried out. For the first time, the precise metallogenic age of the Xinqi area was 68.6 ± 3.9Ma. The diagenetic ages of the Late Guiyong and Early New Qi rocks, which are closely related to metallogenesis, are 72 ~ 65Ma. Within the allowable range of error, it can be considered that the metallogenic and diagenetic stages of the tungsten-tin polymetallic deposit in the area coincide with each other and the metallogenic epochs are at the same time or slightly later than the diagenetic epoch.