内蒙古林西县水头萤石矿床地质特征、类型及其开发利用价值

Geological characteristics,types and development and utilization value of Shuitou fluorite deposit in Linxi,Inner Mongolia

【研究目的】为了充分合理地开发利用内蒙古水头萤石矿,本文对其矿床地质特征、成因及矿床类型进行了系统的分析。【研究方法】本文基于对水头萤石矿床地质特征分析、矿床成因探讨、矿石开发利用现状及潜力分析研究,总结其矿床类型及进一步开发利用价值。【研究结果】水头萤石矿床形成于早白垩世,矿体主要赋存于上二叠统林西组凝灰质粉砂岩中,并严格受断裂构造控制,矿床类型为中低温热液充填型脉状萤石矿床;矿区保有资源/储量矿石量1700.48 kt,CaF_(2)平均品位62.27%,CaF_(2)资源量1058864 t,为大型萤石矿床。光谱分析显示矿石中有(益)用组分为CaF_(2),矿石可浮性较好,通过1次粗选、2次扫选、4次精选可获得CaF_(2)品位97.56%,回收率87.07%的萤石精矿。【结论】综合以上分析表明,水头萤石矿床为为断裂控矿、中低温热液充填型脉状萤石矿床。选矿试验表明,水头萤石矿石可浮性较好,属于易选矿石,本矿具有很好的开发利用价值。

[Objective]The geological characteristics,genesis and deposit types of Shuitou fluorite deposit are systematically studied to fully and rationally develop and utilize its resources.[Methods]Based on the analysis of the geological characteristics,ore genesis and current situation of ore development-utilization,we summarized ore types and development-utilization value of Shuitou fluorite deposit.[Results]Shuitou large fluorite deposit was formed in the early Cretaceous,which ore bodies mainly existed in the upper Permain Linxi Formation tuffaceous siltstone.It’s a fault-control,medium-low-temperature hydrothermal,fracture-filling type deposit.The reserve resources/reserves of fluorite ores are 1700.48 kt,with a CaF_(2) average grade 62.27%and CaF_(2) mineral content of 1058864 t.The spectral analysis shows that useful component is CaF_(2),and the ore has good floatability and belongs to the easy separation ore.Fluorite concentrate with CaF_(2) grade 97.56%and recovery rate 87.07%can be obtained by one state rougher,two states scavenger and four states cleaner.[Conclusions]The comprehensive analysis indicate that Shuitou large fluorite deposit has good development-utilization value.