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文章以金云母、角闪石和白云母为测试对象,利用40Ar/39Ar同位素定年的方法,精确厘定了芙蓉超大型锡矿床的形成时间。研究结果表明,白腊水矿区3个金云母样品的40Ar/39Ar坪年龄分别为(150.6±1.0)Ma、(157.3±1.0)Ma和(154.7±1.1)Ma;热液成因角闪石的坪年龄为(156.9±1.1)Ma。淘锡窝矿区云英岩中2个白云母样品的40Ar/39Ar坪年龄为(159.9±0.5)Ma和(154.8±0.6)Ma;因此芙蓉矿床的形成时间为151～160Ma,这与骑田岭主体花岗岩的侵入时间(151～162Ma)相吻合。湘南地区的柿竹园超大型W-Sn-Mo-Bi-F矿床、新田岭大型W矿床、瑶岗仙W矿床和黄沙坪Pb-Zn多金属矿床的形成时间亦集中在150～160Ma之间,因此,湘南有色金属矿化集中区可能主要集中在150～160Ma发生成矿,这种大规模成矿作用可能与中生代华南岩石圈的拉张、伸展作用密切相关。
In this paper, phlogopite, amphibole and muscovite are used as test objects, and the dating of 40Ar / 39Ar isotopes is used to accurately determine the formation time of Furong super-large tin deposit. The results show that the 40Ar / 39Ar plate ages of the three phlogopite samples in the Bailaishui deposit are (150.6 ± 1.0) Ma, (157.3 ± 1.0) Ma and (154.7 ± 1.1) Ma, respectively. The age was (156.9 ± 1.1) Ma. The 40Ar / 39Ar plateau ages of the two muscovite samples from the dolomite of the Amoy deposit in the Amoy tin mining area are (159.9 ± 0.5) Ma and (154.8 ± 0.6) Ma. Therefore, the Furong deposit formation time is 151-160 Ma, The main granite intrusion time (151 ~ 162Ma) coincide. The Shushuyuan super-large W-Sn-Mo-Bi-F deposit, the Xintianling large-scale W deposit, the Yaoguanxian W deposit and the Huangshaping Pb-Zn polymetallic deposit in southern Hunan are also formed in 150 ~ 160Ma Therefore, it is probable that the intensive mineralization in the Shonan non-ferrous metal mineralization area may take place mainly in the period of 150-160 Ma, and this large-scale mineralization may be closely related to the extension and extension of the Mesozoic south China lithosphere.