| 邵洁涟,李立平.长江中下游铁帽型金矿床矿石的物质组成研究[J].地质找矿论丛,1988,(1):32-46 |
| 长江中下游铁帽型金矿床矿石的物质组成研究 |
| ON STUDY OF ORE MATERIAL COMPOSITION OF GOSSAN-TYPE GOLD DEPOSITS FROM MIDDLE AND LOWER REACHES OF YANGTZE RIVER, CHINA |
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| DOI：10.6053/j.issn.1001-1412.1988.1. 004 |
| 中文关键词: 铁帽型金矿床 矿物组成特征 |
| 英文关键词: |
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| 摘要点击次数: 1312 |
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| 中文摘要: |
| 本文通过江西武山吴家和安徽铜陵代家冲两个铁帽型金矿床的矿石矿物组成特点的研究,为长江中、下游进一步寻找和评价铁帽型金矿床提供必要的依据。 |
| 英文摘要: |
| Gossan-type gold deposit is of important economical value. By the study of ore chemical composition of gossan-type gold deposits from the middle and lower reaches of Yangtze River, wefind that, in the ore, the Au content increases with the increase of Cu, As and Bi comtents and thedecrease of Ba, Mg contents, while the Ag content rises with the increase of Mn, Pb and Zncontents. The authors propose the minor elements indicators in evaluation of gold-bearing ability ofgossans as follows. In the gossan ores with Cu+As (both in wt%)>0.01, the content of Au isoften greater than 1 g/t, while those with (Mn+Pb+Zn)>0.5 (all in wt%), the content of Agis over 5 g/t. The emphasis is placed on the mineralogy of supergene gold, goethite, hematite,oxides and hydroxides of manganese (chalcophanite, birnessite, hollandite, cryptomelane andpyrolusite), covellite, and remnant primary pyrite, etc. A lot of genetic information and oreprospecting typomorphic peculiarities are extracted from these minerals. |
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