摘要
阿舍勒铜锌矿床是一个典型的火山岩型块状硫化物矿床。大陆边缘裂谷带是矿床形成的大地构造环境。早中泥盆世火山活动形成了含矿的双峰式火山岩套。矿床产于近喷发间歇期的石英角斑质角砾凝灰岩中，受火山洼地和同生断裂控制。矿床有双层结构，下部有强烈的围岩蚀变分带，矿体内有矿化分带。成矿以喷气－沉积作用为主，经历了后期变质改造、岩浆热液叠加和表生氧化作用。
The Ashele Cu-Zn deposit is one of the typical massive sulfide ones hosted in volcanics. It is located in the rift of continental margin. The bimodel volcanic suites were formed in the Early-Middle Dervonian volcanic activity. The deposit occurs in quartz keratophyric breccia and tuffs formed in intermittent period,and controlled by volcanic depression and synchronous fractures. It shows a double-layed structure with extensive alteration zoning at bottom of ore bodies and mineralization zoning within ore bodies. Predominantly featured by exhalation-sedimentation, it was reformed by later metamorphism,superimposed by process of magmatic hydrothermal fluids and supergenously oxidized. The metallogenic model is characterized by convection and circulation of magmatic fluid and sea water.
出处
《矿产勘查》
1996年第5期2-9,共8页
Mineral Exploration
关键词
块状硫化物矿床
裂谷
火山喷发
物理化学条件
阿舍勒
新疆
massive sulfide deposits
rift
volcanic exhalation
physico-chemical condition
Ashele
Xinjiang
