摘要
【研究目的】铍属于国家战略关键金属,其成矿机制、成矿规律及资源潜力研究对于寻找铍矿具有重要意义。【研究方法】通过对浙西北常山地区进行铍矿调查与找矿,结合电子探针化学成分分析,【研究结果】在高坞山和蕉坑坞萤石矿中发现了新的铍矿床。该矿床中可含高达4400×10^(−6) Be,矿石矿物主要为硅铍石和羟硅铍石,与萤石、钾长石、石英、方解石等形成矿物组合。硅铍石晶体颗粒较大,个别可达厘米级。该铍矿与萤石矿一起充填于构造裂隙或层间裂隙中,是岩前花岗岩岩浆-热液与围岩发生反应所致,属于热液型铍矿。【结论】高坞山和蕉坑坞铍矿的发现及周边地区铍地球化学异常显示,常山地区具有较大的铍成矿潜力,应作为铍资源找矿勘查的重点区域。
[Objective]Beryllium,a nationally strategic critical metal,plays an indispensable role in modern technology and defense industries.[Methods]Investigating its mineralization mechanisms,patterns,and resource potential is of paramount importance.[Results]Recent explorations in the Changshan area of northwest Zhejiang have unveiled promising beryllium deposits within the Gaowushan and Jiaokengwu fluorite occurrences.These deposits exhibit notable concentrations of up to 4400×10^(−6) Be,with phenakite and bertrandite being the principal ore minerals.These minerals are intimately associated with fluorite,K−feldspar,quartz,and calcite.A remarkable feature of these deposits is the relatively large size of phenakite crystals,some exceeding centimeters in length.The beryllium−bearing minerals are predominantly found filling structural fractures or interlayer fissures adjacent to fluorite ore bodies,which suggests that these are hydrothermal−type deposits formed through the interaction of granite−derived magmatic hydrothermal fluids with host rocks.[Conclusions]The identification of significant Be mineralization at Gaowushan and Jiaokengwu,coupled with the detection of beryllium geochemical anomalies in nearby regions,underscores the substantial mineralization potential of the Changshan district.Consequently,this area should be prioritized for further exploration aimed at assessing and developing its beryllium resources.
作者
饶灿
王汝成
车旭东
王琪
张志琦
王成良
RAO Can;WANG Rucheng;CHE Xudong;WANG Qi;ZHANG Zhiqi;WANG Chengliang(School of Earth Sciences,Zhejiang University,Hangzhou 310058,Zhejiang,China;State Key Laboratory for Mineral Deposits Research/School of Earth Sciences and Engineering,Nanjing University,Nanjing 210046,Jiangsu,China;China Kings Resources Group,Hangzhou 310027,Zhejiang,China)
出处
《地质通报》
北大核心
2025年第1期33-41,共9页
Geological Bulletin of China
基金
国家自然科学基金重大研究计划之重点支持项目《东南沿海晚中生代火山-侵入杂岩岩浆演化-热液蚀变与铍超常富集》(批准号:92062212)。
关键词
铍矿物
铍资源
萤石矿
成矿机制
高坞山
蕉坑坞
浙江
beryllium-bearing minerals
beryllium resources
fluorite deposit
metallogenic mechanism
Gaowushan
Jiaokengwu
Zhejiang
