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hydrothermal vein mineralization
相关语句
  相似匹配句对
     Vein
     脉
短句来源
     7, hydrothermo-metasomatic and hydrothermal vein type;
     7)热液交代和热液脉型;
短句来源
     THE SIGNIFICANCE ABOUT THE VEIN IN STUDYING THE GENESIS OF HYDROTHERMAL ORE DEPOSITS
     岩脉在热液矿床成因研究中的意义——以胶东西北部金矿床为例
短句来源
     vein gen.
     vein gen.
短句来源
     Hydrothermal Eruption
     水热爆炸
短句来源
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The Dajishan tungsten deposit is a superlarge tungsten deposit. Mineralization of the Dajishan deposit has long been suggested to be related, both spatiallyand temporally, to the Dajishan complex granite. The complex granite consists of three rock types, i.e.,medium-megograined porphyroid biotite granite (167Ma, Rb-Sr; 164Ma, K-Ar), medium-grained two-mica granite (161Ma, Rb-Sr; 160Ma, K-Ar) and fine-grained muscovite granite (159Ma, Rb-Sr). The K-Ar ages of hydrothermal vein mineralization are 152Ma and...

The Dajishan tungsten deposit is a superlarge tungsten deposit. Mineralization of the Dajishan deposit has long been suggested to be related, both spatiallyand temporally, to the Dajishan complex granite. The complex granite consists of three rock types, i.e.,medium-megograined porphyroid biotite granite (167Ma, Rb-Sr; 164Ma, K-Ar), medium-grained two-mica granite (161Ma, Rb-Sr; 160Ma, K-Ar) and fine-grained muscovite granite (159Ma, Rb-Sr). The K-Ar ages of hydrothermal vein mineralization are 152Ma and 158Ma,probably related to the medium-grained two-mica granite. So the K-Ar age of the hydrothermal vein mineralization is 155Ma and is probably related to the complex granite.A conclusion may bedrawn thatthe deposit seems to have beenformed by fractional mineralization of liquid from the magma.

大吉山钨矿床是一个大型的石英脉型钨矿床。矿床在空间上与燕山早期复式花岗岩相伴。利用云母单矿物的K Ar同位素年龄测试方法,测定了矿床有关的花岗岩及矿脉的同位素年龄。结果表明,黑云母花岗岩中黑云母K Ar年龄为(160 3±3 03)Ma和(164 2±3 5)Ma,二云母花岗岩中白云母K Ar年龄为(160 6±2 8)Ma,含钨石英脉中白云母K Ar年龄为(152 6±2 35)Ma和(158 1±2 8)Ma。钨成矿与花岗岩的成岩基本不存在时差,推测含钨石英脉的形成可能与岩浆分异出的富含矿化剂和成矿元素的流体有关。

 
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