中文摘要:脉状矿床是重要的矿床类型之一，其矿体往往赋存于断裂构造之中。甚低频电磁法(VLF_EM)以其成本低廉、轻便高效，以及对脉状矿(化)体特有的灵敏性而具有特色。文章通过对以脉状形式产出的金、铅锌(银)及萤石矿的VLF_EM找矿勘查实例，探讨了VLF_EM对这类矿床勘查的有效性和优越性，结果表明该方法对脉状矿床勘查评价有重要意义。
Abstract:The deposit described in this paper is one of the most important types of ore deposit. In general, the spatial distribution of the ore veins in this deposit is controlled by fracture zones. Geophysical investigation indicates that the VLF-EM methods are suitable for exploration of this type of ore deposits in that they can be used precisely, conveniently and economically during the regional evaluation of the vein ore deposits, especially in the areas covered with overburden. The principles and application procedures of the VLF-EM methods have been described in detail in this paper. Meanwhile, Cases are given concerning the successful exploration of gold_ and lead-zinc-silver-bearing veins as well as fluorite veins distributed in Inner Mongolia and Yunnan. In addition, all the geophysical anomalies delineated by the VLF_EM methods have been proved to be valuable. The exploration model derived from the VLF_EM methods is also advanced.
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基金项目:国家地质调查项目(编号：K1.3.32)
引用文本：
白大明，聂凤军，江思宏.2002.甚低频电磁法对脉状矿床勘查评价的意义——以金、铅锌(银)和萤石矿为例[J].矿床地质,21(4):408~413.2002.Feasibility of Applying VLF-EM Methods to Exploration and Evaluation of Vein Deposits: Exemplified by Exploration of Gold, Lead-Zinc (Silver) and Fluorite Deposits [J].Mineral Deposits21(4):408~413
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