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黄沙坪铅锌多金属矿位于南岭多金属成矿带湘南矿集区。自危机矿山接替资源勘查项目执行以来,又探明资源量达大型的含铁钨锡多金属矿及达中型的铜多金属矿,为开展科学研究提供了丰富的资料。笔者在前人研究的基础上,通过采用锆石SHRIMP U-Pb和辉钼矿Re-Os等时线定年方法,对分别对矿区56m中段的石英斑岩体以及矿石中共生的辉钼矿进行了精确定年,获得石英斑岩体锆石SHRIMP U-Pb年龄为152±3Ma,三组同一中段不同位置的辉钼矿Re-Os等时线年龄为159.4±3.3Ma,157.5±2.4Ma和157.6±2.3Ma。测定结果为厘定黄沙坪铅锌多金属矿成岩成矿作用多期多阶段性特点提供了重要的依据。
Huangshaping Pb-Zn polymetallic ore is located in the Nanling polymetallic metallogenic belt. Since the crisis mine replaced the resource exploration project has been implemented, and proven resources up to large-scale iron-bearing tungsten-tin polymetallic ore and medium-sized copper polymetallic ore, to carry out scientific research provides a wealth of information. On the basis of the previous studies, the author uses the zircon SHRIMP U-Pb and the molybdenite Re-Os isochronal dating method to study the quartz porphyry in the middle section of 56 m and the molybdenite symbiotic in ore The dating of SHRIMP U-Pb dating of quartz porphyry was 152 ± 3Ma, and the Re-Os isochron ages of the molybdenite were 159.4 ± 3.3Ma, 157.5 ± 2.4Ma and 157.6 ± 2.3Ma. The results provide an important basis for determining the multi-stage and multi-stage characteristics of diagenesis and mineralization of the Huangshaping Pb-Zn polymetallic deposit.