| 李治平,杨文思,王郁,熊丽君,黄宏立.皖南岩浆作用及其与金矿化的关系[J].地质找矿论丛,1989,(2):42-53 |
| 皖南岩浆作用及其与金矿化的关系 |
| RELATION BETWEEN MAGAMATISM AND GOLD MINERALIZAATION IN SOUTH ANHUI PRROVINCE |
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| DOI：10.6053/j.issn.1001-1412.1989.2. 004 |
| 中文关键词: 岩浆深熔系列 碱性花岗岩 金矿化 |
| 英文关键词: |
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| 中文摘要: |
| 皖南-赣东北深大断裂带是华南地区重要金矿成矿带之一.金山金矿床是其中的典型代表.本文着重对该成矿带北部皖南地区的岩浆岩进行了研究,认为该区不同类型花岗岩类同属一个深熔岩浆系列.其中形成最晚的碱性花岗岩与金矿化具有密切的成生联系. |
| 英文摘要: |
| Jinshan gold ore doposit is situated in Jiangxi province at the southern part of Wan-Gan Fracture. The simlar strata, magmatic rocks and structural conditions exist in the south Anhui province at the northern part of the fracture zone. but gold exploration can not make a break through.This paper presents data of Q-claster analysis, REE and microelement based on which the following ideas are obtained:1. Granitic rocks in the south Anhui Province belong to a anatexie series i. e. tonalitic diorite-granitic diorite-monzonitic granite-syenitic granite-alkaline granite showing a evolution tendancy to Si-rich-K-rich rocks.2. Such a reies is scharacterized by anatexic magma with a narrow range of REE value (150.32-166.47), with the more Eu negative abnormal form as the increasing of the differentiation coefficient. With progress of the evolution of the series Li, Rb, Cs, Nb,, (Ta), (U), Th, (Ba) are increased and the chalccofile elements, Co, (ni), V, Cr, W, Mo、Cu、Pb, (zn), An、and Ag are decreased inciding with the differential principle and suggesting a concentration tendancy at the late magmatic hydrothermal fluid period.4. Gold abundance is very low in alkaline granite but it is the end member of the evolution series and always associated spatialy with the ore-material-rich late magmatic hydrothermal fluid. So such rock bodies and the fracture zones in the periphery of them are the favourable sites to form gold deposit. |
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