摘要
霞浦大湾铍钼矿区处于闽东火山断坳带与建阳-柘荣近东西向断裂带交汇处的东北部,矿体主要产于晚侏罗世南园群鹅宅组与赤水组火山碎屑岩接触带附近的裂隙带中。辉钼矿石英脉呈脉状、少量透镜状;铍矿体呈陡倾角似层状分布在辉钼矿体两侧,主要产于角岩化、绢英岩化、硅化、云英岩化等蚀变带中。矿床的形成具多阶段性,受构造裂隙和岩浆热液活动的控制,属中-高温热液充填-交代型铍钼矿床。
The beryllium and molybdenum ore bodies in the Dawan of Xiapu County is located in the northeast interchange between volcanic fault sag zone of northeast Fujian and Jianyang to Tuorong EW fault zone. In the Dawan beryllium and molybdenum deposit of Xiapu County, the beryllium and molybdenum ore bodies are mainly discovered in the fractured zones near the contact zone of Late Jurassic Ezhai and Chishui Formation volcaniclastic rocks. The quartz veins of mulybdenite occur in veins and the beryllium orebody is distributed in the veiny molybdenite as a stratold pattern. The alteration of wall recks takes on the characteristics of homfelsization, serieite-quartz alteration, beresitization~ silicification and greisenization. The formation of the deposit has multiple stages and the ore-forming process is hand in glove with magmatie activity and fissuring structures. The deposit belongs to the intermediate and high temperature hydrothermal filling and metasomasis type of a beryllium molybdenum deposit.
出处
《中山大学研究生学刊（自然科学与医学版）》
2011年第2期69-78,共10页
Journal of the Graduates Sun YAT-SEN University(Natural Sciences.Medicine)
关键词
铍钼矿
矿床成因
石英脉
热液充填-交代型
霞浦大湾
molybdenum and beryllium minerals
deposit genesis
quartz veins
hydrothermal filling and metasomasis type
the Dawan of Xiapu County
