长台萤石矿田成矿规律及找矿方向

Mineralization Rules and Prospecting Direction of the Changtai Fluorite Ore Field

摘要: 长台萤石矿田位于江绍断裂和宁波–丽水断裂之间，燕山期岩浆侵入活动频繁，为萤石成矿热源和物源提供了充足条件。萤石是国家战略性的非金属矿产资源，也是工业上氟元素的主要来源。在浙江省江山–遂昌一带，围绕着洪公岩体分布着众多萤石矿，主要由长台萤石矿田、峡口萤石矿田、黄沙腰萤石矿田和湖山萤石矿田组成，本文主要对其中的长台萤石矿田进行成矿规律及找矿方向研究分析。长台萤石矿田位于江绍断裂和宁波–丽水断裂之间，燕山期岩浆侵入活动频繁，火山作用规模大，构造运动强烈，长期的火山、岩浆活动提供充分的成矿热源和氟物质来源，氟物质在有利的构造空间富集成矿。根据长台萤石矿田的成矿特征、控矿条件、矿床成因及找矿标志，总结长台萤石矿田的成矿规律，提出长台萤石矿田进一步的找矿方向。

Abstract: The Changtai fluorite ore field is located between the Jiangshao Fault and the Ningbo-Lishui Fault. Frequent magmatic intrusion activities during the Yanshanian period provided sufficient heat and material sources for fluorite mineralization. Fluorite is a strategic non-metallic mineral resource of the country and it is also the main source of fluorine elements in industry. In the Jiangshan-Suichang area of Zhejiang Province, there are many fluorite mines distributed around the Honggong intrusive body, mainly composed of Changtai fluorite ore field, Xiakou fluorite ore field, Huangshayao fluorite ore field and Hushan fluorite ore field. This paper mainly conducts research and analysis on the mineralization law and exploration direction of the Changtai fluorite mining field. The Changtai fluorite mining field is located between the Jiangshao fault and the Ningbo-Lishui fault, with frequent volcanic and intrusive activities during the Yanshan period, large-scale volcanic activities, and intense tectonic movements. The long-term volcanic and magmatic activities provide sufficient mineralization heat sources and fluorite material sources, and the fluorite materials are enriched in favorable structural spaces to form deposits. Based on the mineralization characteristies, controlling mineralization conditions, ore deposit genesis, and prospecting indicators, this paper summarizes the mineralization rules in the Changtai fluorite ore field and proposes new directions for further exploration for the Changtai fluorite ore field.