摘要
大坪金矿床产于黄茅园与中华山花岗岩体之间外接触带。赋矿地层为上元古界及震旦系浅变质绿片岩相碎屑岩系,金源物质丰富。区域构造变形强烈,褶皱断裂发育,矿床总体受向大型韧脆性剪切带(NEF8)控制。矿化明显分为向和向两组,以向矿脉蚀变强,矿NWNENW物组合复杂,金含量较高,富矿体产于两者交叉处。主要矿体均分布于变形强带内部及附近,矿化与硅化,绢云母化,黄铁矿、毒砂关系密切。目前发现含金矿脉条,矿体近个,找矿前景3730十分广阔。
Au deposit of Daping ocucrs in the external contact zone between Huangmaoyuan granite and Zhonghuashan granites, strata of ore-occurred are clastic rock of greenschist facies of Paleoproterozoic erathem and Sinian system, there are abundant Au sources in the strata. The structural deformation is strong, folds and faults develop very well, the ore bodies are whole controlled by the large-sized ductile-britle shear zone(F8). The mineralization is obviously divided into two orientations of NW and NE, and ore-vein of NW is the strong alteration, mineral association is complex,there is a high Au-bearing content, the ore-riched bodies occur in the cross place between NW and NE mineralization zone. The main ore-bodies distribute along with the interior or nearby of the strong deformation zone, their mineralization has a closely relationship with silicification, sericitization, pyrite and arsenopyrite. At present, 37 Au-bearing vein and approaching 30 ore bodies have been found in the district, there is a vast prospect foreground.
出处
《湖南地质》
2001年第3期171-176,共6页
Hunan Geology
关键词
金矿床
韧脆性剪切带
NW向矿体
NE向矿体
找矿前景
赋矿地层
Au deposit
Ductile-britle shear zone
Ore body of NW orientation
Ore body of NE orientation
Prospect foreground
