江西金山金矿田门前山金矿地质特征及找矿方向

来源期刊：有色金属科学与工程2012年第2期

论文作者：谢国子 赵忠强

文章页码：66 - 70

关键词：深边部找矿；韧性剪切；蚀变分带；成矿特征；金山金矿田；找矿方向

Key words：deep and side prospecting; ductile shear; alteration zoning; gold deposit; Jinshan gold field; Menqianshan mountain

摘    要：门前山金矿床位于江西省金山超大型金矿田北西缘，是矿田内继金山、西蒋、石坞、朱林西等后发现的又一处具有影响的金矿床，找矿成果丰富了金山金矿田深边部找矿理论。矿区内金矿找矿，证实了矿田内金山-朱林、西蒋-石碑等主要剪切带及金矿体倾向上的深部延伸，剪切带的构造岩分带、蚀变分带明显，具有典型的“超糜棱岩、糜棱岩带-石英、黄铁矿、铁白石化带-金矿化(体)带”等构造岩-蚀变-金矿化三位一体的成矿特征。矿床成因为受韧性剪切带控制的变质热液型金矿床，具有“火山沉积-区域变质-动力变质-韧性剪切带控矿容矿一改造叠加”的综合成矿模式。文章论述了门前山金矿床的成矿地质背景、矿石类型及组构、矿体特征、围岩蚀变特征及控矿韧性剪切带等地质特征，进而提出了进一步找矿的方向。

Abstract:

The Prospecting of Menqianshan gold deposit enriched deep and side prospecting theory in Jinshan gold field. Gold prospecting in the mining area confirmed the major shear zones and gold body's deep inclination. The tectonite zoning and alternation zoning of shear zone are clear, with a typical “ultramylonite, mylonite zone of quartz, pyrite, iron Petrochemical Zone-Gold (body)” with tectonic rock-alteration -gold mineralization characteristics of three-in-one. The deposit is characteristic of the comprehensive metallogenic model of “volcano sedimentary-regional metamorphic dynamic metamorphism-ductile shear zone ore controlling ore-reformation and superposition”. It is metamorphic hydrothermal type gold deposits ,controlled by the ductile shear belt. The article states the ore-forming geological background, ore types, ore characteristics and structure, wall rock alteration characteristics, ore-controlling ductile shear belt and geological characteristics. The direction of further prospecting is also put forward.