| 江西九瑞地区铜金成矿系列模式 |
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| 引用本文：.1995.Model of copper and gold metallogenic series in Jiujiang-Ruichang area[J].Mineral Deposits,14(1):44~50 |
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| 中文摘要:九瑞铜金矿田是长江中下游铁、铜金成矿带的一个重要组成部分。区内不同的沉积建造，由于其物理化学性质的不同，控制了不同类型矿床的形成（斑岩型、隐爆角砾岩型、层控型、矽卡岩型和石英脉型等）’区内岩浆的演化控制了不同的矿种（铜、金、钼等）；它们互相叠加组合构成了区内不同矿床类型和不同矿化种类的矿床及其组合（斑岩型铜、钼矿床、隐爆角砾岩型铜、金矿床、矽卡岩型铜铝矿床、层控型铜、金矿床以及矽卡岩型一层控型矿床组合、斑岩型-层控型-矽卡岩型矿床组合、隐爆角砾岩型-层控型矿床组合等）。 |
| 中文关键词:九瑞地区 铜金成矿系列 成矿模式 |
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| Model of copper and gold metallogenic series in Jiujiang-Ruichang area |
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| Abstract:The Jiujiang-Ruichang copper-gold metallogenic belt is an important part of the Middle and Lower Yangtze Valley iron- copper-gold metallogenic belt. Most strata from Ordovician to Quaternary are exposed in this area. Ore-bearing rocks from Ordovician to Triassic might be assigned to three formations: ① clastic formation ( S-D); ② kappa-pyrite-bearing dolomite formation (C2h); and ③ limestone formation (P-T). Different chemical properties of these formations led to the formation of different types of ore deposits, such as porphyry type, cryptoexplosive breccia type, skarn type, stratabound type and quartz vein type. In Yanshanian period, there were frequent magmatic activities, which led to the formation of some 30 hypabyssal-ultrahypabyssal intermediate-acid intrusive bodies. From early to late, the major ore-bearing rock bodies evolved in order of quartz diorite porphyrite-granodiorite porphyry quartz porphyry, accompanied by the corresponding variation in ore potential from gold through copper to molybdenum. The superimposition of different sorts of ore-bearing magma upon different ore-bearing formations resulted in the formation of different types (copper, gold, molybdenum) of deposits as well as their combinations, thus constituting the copper-gold metallogenic series in Jiujiang-Ruichang area. |
| keywords:Jiujiang-Ruichang area, copper-gold metallogenic series, metallogenic model |
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