| 刘道荣.浙西北地区萤石矿床成因及找矿方向[J].地质与勘探,2017,53(5):947-959 |
| 浙西北地区萤石矿床成因及找矿方向 |
| Genesis of fluorite deposits and prospecting direction in Northwestern Zhejiang Province |
| 投稿时间：2017-05-25 修订日期：2017-06-25 |
| DOI： |
| 中文关键词: 萤石 矿床成因 找矿方向 浙西北地区 |
| 英文关键词: fluorite, genesis of deposit, prospecting direction, Northeast Zhejiang Province |
| 基金项目:中国地质调查局东部地区硼磷萤石等重要非金属矿产调查（编号：DD20160057）项目资助 |
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| 中文摘要: |
| 浙西北地区近年来在岩浆期后热液型萤石矿床勘查中取得重大突破，先后探明常山、淳安、开化、安吉等地多个大中型萤石矿床。这些矿床主要分布在燕山期（早白垩世）花岗岩类内外接触带中，成矿作用与岩浆侵入活动密切相关。通过对浙西北地区7个典型矿床进行矿床地质特征、成矿岩体及控矿构造研究，探讨岩体与萤石成矿之间的关系，将萤石矿床成因初步划分成2个亚类：与A型花岗岩有关的岩浆期后热液型萤石矿床和与I型花岗岩有关的岩浆期后热液型萤石矿床。通过该区萤石矿床成矿物质来源、成矿温度、萤石稀土地球化学特征、成矿时代与成矿构造环境分析，较系统总结了浙西北主要萤石矿床成因。在此基础上，结合区域F元素地球化学特征及剩余重力异常特征，提出本区萤石矿的找矿方向为高氟岩体分布区、F元素异常区及剩余重力异常负值区。 |
| 英文摘要: |
| In recent years, a great breakthrough has been made in the exploration of hydrothermal fluorite deposits in northwestern Zhejiang Province, with large- and middle-scale fluorite deposits found in Changshan, Chun’an, Kaihua, and Anji counties. These deposits are mainly distributed in the inner and outer contact zones of Yanshanian（Early Cretaceous） granite, and their mineralization is closely related to magmatic intrusion. Based on the study of the metallogenic geological background and geochemical characteristics and ore-control?structures of seven typical fluorite deposits in northwest of Zhejiang province, this work discusses the relationship between the rock mass and fluorite mineralization. The genesis of the fluorite deposits can be divided into two categories: the late magmatic hydrothermal fluorite deposits related to the A-type granites and those related with the I-type granites. This work made an analysis of metallogenic sources, metallogenic temperature, REE geochemical characteristics of fluorite, metallogenic epochs and metallogenic environments of the deposits, and discusses the genesis of the major fluorite deposits. Furthermore, combined with the geochemical characteristics of the F-element and the features of the residual gravity anomalies, it is suggested that the future prospecting of the fluorite deposits should be conducted in the following places: the distribution area of high –F granites, the F-element anomaly area and the area with negative residual gravity anomalies. |
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