| 湖南大坊金银矿氧化带特征及工业意义 |
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| 引用本文： | 王福山.湖南大坊金银矿氧化带特征及工业意义[J].湖南地质,1991,10(1):17-24. |
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| 作者姓名： | 王福山 |
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| 作者单位： | 武警黄金十六支队 |
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| 摘 要： | 湖南大坊金银矿位于耒阳—临武南北向构造带中段,控矿层位为石炭系中上统壶天群和下统梓门桥组白云岩。矿体受北西和北东向组扭裂面的控制,产于花岗闪长斑岩内外接触带。氧化带的有用组分为金和银,已圈定矿体7个,其平均品位Au 2.68 g/t,Ag26.20g/t。金的粒度以中—细粒为主,氰化浸出率在91％以上,银经槽浸回收率仅20-30%。鉴于金浸出率高,矿体埋藏浅。开采技术条件简单,交通方便等特点,值得开发利用。
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| 关 键 词： | 金矿 银矿 氧化带 氰化法 大坊 |
CHARACTERISTICS OF THE OXIDATION ZONE OF DAFAN GOLD-SILVER DEPOSIT IN HUNAN AND ITS ECONOMIC SIGNIFICANCE |
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| Wang Fushan.CHARACTERISTICS OF THE OXIDATION ZONE OF DAFAN GOLD-SILVER DEPOSIT IN HUNAN AND ITS ECONOMIC SIGNIFICANCE[J].Hunan Geology,1991,10(1):17-24. |
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| Authors: | Wang Fushan |
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| Institution: | No.16 Detachment of Gold Exploration Troops of Armed Police Force |
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| Abstract: | Dafan gold-silver deposit is situated in the middle part of Leiyang--Lingwu meridional structural belt. The ore-bearing strata are dolomite of Futian Group of Middle-Upper Carboniferous System and Zimenqiao Formation of Lower Carboniferous System. The ore bodies are controlled by NW and NE trending shear rupture faces and occur in the inner and outer contact zone of the granodiorite porphery mass. The useful components in the oxidation zones are gold and silver.7 orebodies have been delineated already. The average grade is 2.68g/t for Au, 26.20g/t for Ag. The gold size is mainly middle to fiue-grained. Cyanidation extracting rate is more than 91%, but the recovery rate of silver through trough soaking is only 20--30%. Due to the high extract rate of gold, shallow occurrence of orebodies and simple technical condition of exploitation as well as convinient transportation, it is worth exploiting and utilizing. |
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| Keywords: | Oxidation zone Gold-silver deposit Cyanidation method Economic significance Dafan |
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