中国铍矿成矿规律
发布时间：2019-03-26 20:02
【摘要】：中国是世界铍资源大国,本次工作统计到中国铍资源产地241处。铍矿床可分为内生型和外生型。根据岩浆系统的碱铝属性,内生铍矿床可分属于过铝性、偏铝性、过碱性成矿系统;根据流体演化阶段,再分为岩浆型、伟晶岩型、岩浆热液型等3个类型;然后根据赋矿环境进一步分为伟晶岩型、花岗岩型、石英脉型、矽卡岩型、云英岩型等多个矿化形式。过铝性系统的矿石矿物主要为绿柱石;偏铝性系统的矿石矿物主要为硅铍石、羟硅铍石、日光榴石等;碱性系统的矿石矿物主要为硅铍钠石、斜方板晶石、硅钡铍矿、硅铍石、羟硅铍石、硅铍钇矿等。不同赋矿环境产生不同类型的铍矿床,对应不同的矿物组合、矿化分带、矿石结构。统计结果表明,中国铍矿床主要产于过铝性的成矿系统,偏铝性、碱性成矿系统的铍矿床较少。多数铍矿床形成于中生代,主要产于新疆阿尔泰、川西、南岭等成矿带。碱性成矿系统的铍矿床多分布在板块边缘的深断裂或裂谷,过铝性成矿系统的铍矿床主要形成于褶皱造山带,具有一定的定向分布特征。过铝性-偏铝性成矿系统的铍成矿作用可用表示不同岩浆演化阶段和成矿环境的成矿模型描述。笔者建议:在阿尔泰和川西成矿带,重点考虑花岗伟晶岩型锂铍铌钽资源的综合找矿工作;在华南地区,注意与钨锡共(伴)生的铍资源的综合利用;着重在地质找矿和科研工作程度较低的地区,包括在东南沿海、大兴安岭地区寻找火山岩型和岩浆热液型铍矿床;加大西部铍资源空白区的找矿工作。
[Abstract]:China is the world beryllium resource big country, this work statistics to China beryllium resource origin 241. Beryllium deposits can be divided into endogenous and exogenic types. According to the alkali-aluminum attribute of magmatic system, the endogenic beryllium deposit can be divided into three types: peraluminous, partial aluminized and over-alkaline metallogenic system, and according to the stage of fluid evolution, it can be divided into three types: magmatic type, pegmatitic type and magmatic hydrothermal type. Then, according to the ore-bearing environment, it is further divided into pegmatite type, granite type, quartz vein type, skarn type, cloud type and so on. The ore minerals of peraluminous system are mainly chlorite, and the ore minerals of metaluminous system are mainly silica beryllium, hydroxyberyllium, solar garnet, etc. The ore minerals of the alkaline system are mainly beryllium, orthobarite, barium beryllium, yttrium and so on. Different ore-bearing environments produce different types of beryllium deposits, corresponding to different mineral assemblages, mineralization zones and ore structures. The statistical results show that the beryllium deposits in China mainly occur in the peraluminous metallogenic system, with less beryllium deposits in the metaluminous and alkaline metallogenic systems. Most beryllium deposits were formed in Mesozoic, mainly in Altai, western Sichuan and Nanling metallogenic belts in Xinjiang. The beryllium deposits in the alkaline metallogenic system are mostly distributed in the deep faults or rifts at the edge of the plate. The beryllium deposits in the peraluminous metallogenic system are mainly formed in the fold orogenic belt and have certain directional distribution characteristics. The beryllium mineralization of the peraluminous-metaluminous metallogenic system can be described by a metallogenic model representing different stages of magmatic evolution and metallogenic environment. The authors suggest that in the Altai and western Sichuan metallogenic belts, the comprehensive prospecting work of granite pegmatite type lithium, beryllium, niobium and tantalum resources should be taken into account, and in South China, attention should be paid to the comprehensive utilization of the associated beryllium resources with tungsten and tin. It is emphasized to search for volcanic rock type and magmatic hydrothermal beryllium deposit in the areas with low degree of geological prospecting and scientific research, including in the southeast coast and Daxinganling area, and to increase the prospecting work in the western beryllium resource blank area.
【作者单位】： 中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室;中国地质大学;
【基金】：国家自然科学基金项目(编号:41372088) 地调项目(编号:DD20160056;DD20160055) 中央级公益性科研院所基本科研业务费专项基金(编号:K1409)联合资助
【分类号】：P618.72
[Abstract]:China is the world beryllium resource big country, this work statistics to China beryllium resource origin 241. Beryllium deposits can be divided into endogenous and exogenic types. According to the alkali-aluminum attribute of magmatic system, the endogenic beryllium deposit can be divided into three types: peraluminous, partial aluminized and over-alkaline metallogenic system, and according to the stage of fluid evolution, it can be divided into three types: magmatic type, pegmatitic type and magmatic hydrothermal type. Then, according to the ore-bearing environment, it is further divided into pegmatite type, granite type, quartz vein type, skarn type, cloud type and so on. The ore minerals of peraluminous system are mainly chlorite, and the ore minerals of metaluminous system are mainly silica beryllium, hydroxyberyllium, solar garnet, etc. The ore minerals of the alkaline system are mainly beryllium, orthobarite, barium beryllium, yttrium and so on. Different ore-bearing environments produce different types of beryllium deposits, corresponding to different mineral assemblages, mineralization zones and ore structures. The statistical results show that the beryllium deposits in China mainly occur in the peraluminous metallogenic system, with less beryllium deposits in the metaluminous and alkaline metallogenic systems. Most beryllium deposits were formed in Mesozoic, mainly in Altai, western Sichuan and Nanling metallogenic belts in Xinjiang. The beryllium deposits in the alkaline metallogenic system are mostly distributed in the deep faults or rifts at the edge of the plate. The beryllium deposits in the peraluminous metallogenic system are mainly formed in the fold orogenic belt and have certain directional distribution characteristics. The beryllium mineralization of the peraluminous-metaluminous metallogenic system can be described by a metallogenic model representing different stages of magmatic evolution and metallogenic environment. The authors suggest that in the Altai and western Sichuan metallogenic belts, the comprehensive prospecting work of granite pegmatite type lithium, beryllium, niobium and tantalum resources should be taken into account, and in South China, attention should be paid to the comprehensive utilization of the associated beryllium resources with tungsten and tin. It is emphasized to search for volcanic rock type and magmatic hydrothermal beryllium deposit in the areas with low degree of geological prospecting and scientific research, including in the southeast coast and Daxinganling area, and to increase the prospecting work in the western beryllium resource blank area.
【作者单位】： 中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室;中国地质大学;
【基金】：国家自然科学基金项目(编号:41372088) 地调项目(编号:DD20160056;DD20160055) 中央级公益性科研院所基本科研业务费专项基金(编号:K1409)联合资助
【分类号】：P618.72
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