| 刘英俊,季峻峰,孙承辕,崔卫东.湖南黄金洞元古界浊积岩型金矿床的地质地球化学特征[J].地质找矿论丛,1991,(1):1-13 |
| 湖南黄金洞元古界浊积岩型金矿床的地质地球化学特征 |
| GEOLOGICAL AND GEOCHEMICAL CHARACTERISTICS OF HUANGJINDONG TURBIDITE—HOSTED GOLD DEPOSIT, HUNAN PROVINCE |
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| DOI：10.6053/j.issn.1001-1412.1991.1. 001 |
| 中文关键词: 金矿床 浊积岩 地质地球化学 黄金洞 |
| 英文关键词: |
| 基金项目:国家自然科学基金 |
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| 中文摘要: |
| 黄金洞金矿床产于中元古界冷家溪群浊积岩建造中,为典型的浊积岩型金矿床。冷家溪群浊积岩建造初始富集金等成矿元素,为黄金洞金矿的形成提供了物质来源;矿床属于Au-As元素组合型金矿床,金主要与毒砂、黄铁矿和条带状石英等矿物相伴生;矿床形成于中偏高温、中压、较高氧逸度和PH值条件下;成矿流体为富含CO2的Mg-ca-Na质含硫热水溶液,其主要源于变质热液;金呈Au-As-S型络合物迁移,在扩容带中沉淀富集成矿。 |
| 英文摘要: |
| Huangjindong gold deposit is a typical turbitite gold deposit occurring in Proterozoic Lengjiaxi Group of turbitite formation. Lengjiaxi Group is initialy riehed in gold metallogenic elements which make a basis for the formation of Huangjindong gold deposit. Au is correlated with As and ore grade is controlled by the content of arsenopyrite, pyrite and stripped quartz. The ore is formed at 300°-400℃ and about 1013×105pa with PH value of 5.8-7.2 and fo2 of 10-25.8-1029.5. The ore-forming fluid is the metamorphic Mg-Ca-Na hot sulfur-bearing fuid enriched with CO2. Gold is transported as Au-As-S complexes and deposited in dilatant fractures. |
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