| 湖南柿竹园钨多金属矿床成矿机理的实验研究 |
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| 引用本文：.1996.Experimental study on ore-forming mechanism of the Shizhuyuan tungsten-polymetallic deposit, Hunan Province[J].Mineral Deposits,15(3):278~286 |
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| 中文摘要:作者在深入柿竹园钨多金属矿床野外地质工作的基础上，采用矿区燕山期花岗岩和泥盆系灰岩作为试料，在含pH=4.0的0.3 M NaCl + 0.7 M KF水溶液的高压釜中持续了120小时的交代作用。实验的结果表明了：在400～700 ℃的温度和250×105 ~ 900×105 Pa的压力下，形成的交代岩及其钨、锡、钳、铋矿物基本上与矿区的矽卡岩及其矿石矿物共生组合相吻合，揭示了湖南柿竹园矽卡岩型钨多金属矿床成矿的机理。 |
| 中文关键词:实验研究 成矿机理 矽卡岩钨多金属矿床 湖南柿竹 |
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| Experimental study on ore-forming mechanism of the Shizhuyuan tungsten-polymetallic deposit, Hunan Province |
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| Abstract:Based on a thorough field study on the Shizhuyuan tungsten-polymetallic deposit, the author, using Yanshanian granite and Devonian limestone as starting materials, carried out metasomatic experiments in pressure vessels containing solution of 0.3 M NaCl + 0.7 M KF (pH=4.0), with duration of the experimentation being 120 hours. In the experiments under the conditions of 400 ~ 700℃ and 250×105 ～ 900×105 Pa, skarns consisting mainly of grossular-andradite, hedenbergite, diopside, wollastonite, vesuvianite and scapolite were formed in company with skarn-associated metallic minerals such as scheelite, wolframite, molybdenite, cassiterite/ stannite and native bismuth. The skarn mineral assemblages as well as associated tungsten, tin, molybdenum and bismuth minerals formed in these experiments are basically consistent with minerals that occur in the ore district. Furthermore, the author analysed and probed into skarn mineral assemblages formed in the experiments, chemical reaction in the ore-forming process and its physicochemical conditions. In this way, the author has brought to light the rock-forming and ore-forming mechanism of the Shizhuyuan tungsten-polymetallic deposit in Hunan Province. |
| keywords:experimental study, rock-forming and ore-forming mechanism, tungsten-polymetallic deposit, Shizhuyuan of Hunan Province |
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