摘要
马迹钠长石矿床产于衡山县白石峰花岗岩岩体西侧的混合岩带中,矿带走向北东—南西向,全长28km,其中马迹一带最为集中,矿床规模巨大。矿体呈透镜状、巨厚的板状及复杂的树枝状。矿石含Na_2O平均在9％以上。矿床与区内岩浆活动有密切关系,并且受控于北东向及北西向断裂中。岩浆期后的热液活动促使构造带附近围岩广泛钠化,形成良好的钠长石矿,钠质岩石在后期的风化作用下形成规模巨大的高岭土矿床。
Maji albite deposit was found in the migmatite zone to the west of Baishifeng granitic intrusion. The mineralized belt strikes NE-SW, the length of which reaches 28 km. The mineralization concentrated in around Maji, and formed large scale deposit. The orebodies occurred in lenticular, thickly tabular and complicated dendritic shapes, with an average Na_2O grade of more than 9％. The deposit is closely connected with regional magmatic activities and controlled by NE and NW trend faults. The post-magmatic hydrothermal activities widely albitized the country rocks near structure belt and formed good quality albite deposit. The sodium rocks were transformed by weathering thereafter into very large-scale kaolinitc deposit.
出处
《湖南地质》
1989年第1期29-34,共6页
Hunan Geology
关键词
长石
钠长石矿床
地质特征
衡山县
Albite deposits
Granite
Contact zone
Migmatie
Hengshan County
