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丹寨汞、金与油气成矿模式的探讨 总被引:1,自引:0,他引:1
陈庆年 《矿物岩石地球化学通报》1992,(1)
貴州丹寨汞矿是三都—丹寨汞锑矿带中规模最大、矿化最富的矿床,累计采汞金属量已达万吨。1981年发现金矿化后,经相继工作,已探获相当Au储量,勘探、开发中屡次发生瓦斯燃爆、毒害,矿石中常见沥青。矿床处于麻江古油藏(破坏前储量16亿吨,现存沥青砂岩尚有酸化利用可能)范围内。因此丹寨汞矿不仅可供探讨汞矿成矿规律及理论模式,还可提 相似文献
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Described in this paper are the fundamental characteristics of mineralization of gold ores in the Sandu-Danzhai Hg-Sb-Au ore belt of Guizhou Province,Through systematic sampling of the industrial orebody and alteration zone,the total amount of the rare-earth elements,that of the light rare-earth elements,Eu depletion and other parameters are clarified.There have been distinguished two types of REE distribution patterns:the“Clay type“and the “quartz type“ .High-grade orebodies are closely related with silicification,illitization and pyritization.The seven-component diagram of the REEs of even numbers in the periodic table(Bal-asov,1966)is capable of distinguishing ore-bearing from ore-barren deposits. 相似文献
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丹寨卡林型金矿δ~(34)S(硫化物)主要分布在16‰~20‰之间,矿石全岩的Rb-Sr等时线年龄为400及114Ma,与矿石共生的沥青反射率为1.12%~4.41%.丹寨金矿及富集的沥青可能均来自以下寒武系为主的"黑层"沉积建造,金矿的富集阶段与麻江古油藏的形成阶段基本一致.这一想法已被模拟实验证实.在350C和100MPa压力下金矿富集于矿源层,在550C,100MPa实验条件下金矿发生大量迁移.气态烃对金矿的富集起着重要作用. 相似文献
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