摘要
<正>江西大湖塘钨矿床是近年发现的多类型矿化紧密共生的超大型岩浆热液型钨矿床。本团队在大湖塘平苗矿段地表考察花岗斑岩脉时,首次发现多条岩脉中发育黑钨矿-石英细脉,见大量细粒针状黑钨矿。矿脉仅局限在岩体中,未进入围岩中。LA-ICP-MS对该花岗斑岩锆石U-Pb定年,一组206Pb/238U加权平均年龄为149.1±1.1 Ma,为花岗斑岩年龄;另一组为890 Ma左右,为同化混染晋宁期围岩导致。
引文
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