中国钼矿主要矿集区及其资源潜力探讨

钼矿是中国的优势矿种之一,在全国范围内均有分布。矿床成因类型以斑岩型、矽卡岩型和热液脉型为主,成矿时代以中生代和新生代为主。新世纪,随着科技进步,钼的应用领域逐渐扩大,带动了中国钼矿的勘探和开采工作,取得了一系列找矿新突破,特别是在非传统的钼矿产区发现了许多大型和超大型钼矿,使中国钼矿资源量有了大的突破,基本上改变了过去"南钨北钼"的原有格局。本文在广泛搜集资料的基础上,总结了中国钼矿资源特点,并综合考虑岩浆、构造、地层、流体、成矿时代等因素,初步将中国钼矿划分为17个大的矿床集中区(矿集区),简单介绍了矿集区的基本地质特征和成矿特征,给出了几个最重要矿集区的区域成矿模式,同时根据已有资料和找矿新进展,对主要钼矿矿集区进行了资源潜力分析,并对中国钼矿找矿工作提出了建议。     

中国贵金属矿床的基本成矿规律与找矿方向

通过对近年来贵金属矿床勘查进展及其主要类型、主要成矿时代、主要矿集区等的分析与归纳,总结了中国金矿床、银矿床和铂族元素矿床的基本成矿规律,并提出它们各自的找矿方向。中国金矿床类型多,主要形成于中生代和新生代,集中在胶东、辽东、华北地台边缘、小秦岭、阿尔泰、金沙江-红河断裂带、台湾和东南沿海、滇黔桂、陕甘川及长江、黑龙江等主要水系的上游,金矿的找矿方向包括:①老矿区的"探边摸底"和"攻深找盲";②新矿集区的典型研究与采选冶技术改进;③综合利用技术的创新将使相当多的表外矿变为当前可开采的矿床;④新区勘查;⑤加强成矿系列、成矿体系和成矿规律的研究,以理论指导找矿并综合评价。中国银矿以伴生银矿为主,主要形成于中生代和新生代,变质岩、岩浆岩和沉积岩均可容矿,造山带和盆地区的构造破碎带尤其值得重视。当前需要加强对锰矿区含银性和Mn异常区的研究,尤其是中国东部中新生代盆地区断裂带与Mn、Ag化探异常吻合地区,应该综合评价。中国铂族元素矿床可以分为岩浆型、沉积型和热液型三大类,可形成于从前寒武纪到新生代的各个时代,至少构成8个重要成矿远景区(带),重点放在康滇地轴和二叠纪末期峨眉地幔柱影响到的地区,但华北地台老基底中的原生矿及其周边的砂矿不可忽视。     

滇黔相邻区银厂坡-石门冲断褶皱带构造特征及构造控矿作用浅析

本文在叙述 "银厂坡-石门冲断褶皱带"断裂展布样式、构造组合特征基础上,总结了区内构造控矿特征,指出不同级次断裂控制了矿带、矿床及矿体的分布.在此基础上,把"银厂坡-石门冲断褶皱带"分为6个断裂带(矿带),10个构造复杂区(找矿靶区),初步认为"构造化学找矿方法"是区内行之有效的找矿方法.     

秦岭与滇黔桂地区卡林型金矿地质与地球化学特征

滇黔桂与秦岭地区是中国卡林型金矿两大集中分布区,选取了两大矿集区30余个典型的矿点,对两大矿集区的矿床地质、稳定同位素(O、D、C、S)、Pb同位素、稀土元素和流体包裹体进行了系统对比,探索了各矿集区的成矿物质来源、成矿物理化学条件及其地质制约,两大矿集区卡林型金矿特征具有相似点,成矿时间主要集中在100～200 Ma之间,赋存围岩较为广泛,成矿流体具有混合性、以大气降水为主,成矿物质总体来源干围岩,控矿构造以压扭性为主,成矿条件为浅成、中低温、高硫低氧的中酸性环境.由于秦岭地区处于板块边缘,流体、物质成分来源相对较为复杂,深部流体参与成矿的特征明显;而滇黔桂地区为板块内部矿集区,流体、物质成分来源相对较为单一,成矿温度相对较低;区域成矿特色的差异是由其所处构造地质背景不同造成的.     

特约主编致读者

<正>华南大规模低温成矿域(指成矿温度100~250℃)以Pb、Zn、Ag、As、Sb、Hg和Au等矿床为特征,分布范围约达90万km~2。该成矿域可按照分布区域进一步划分为川滇黔Pb-Zn-Ag矿集区、右江盆地Au-As-Sb-Hg矿集区和湘中盆地Sb-Au矿集区。华南低温成矿域的成矿作用时间大致限定在印支期(230~200Ma)和燕山期(160~130 Ma)两个阶段,都经过了中生代末期—新生代的强烈构造改造。华南低温成矿域的规模和复杂程度可与美国中西部的密西西比河谷型     

中国东部中、新生代软流圈上涌与构造-岩浆-矿集区

以深部地球物理资料为基础,结合大地构造环境、岩浆岩同位素示踪及矿产资源分布规律,加以综合分析.通过热力学计算可知,中国东部近2亿年来的上地幔岩石圈/软流圈构造可以存留至今,且能区分出中、新生代.软流圈上涌与矿集区:(1)中生代金属矿:(a)克拉通区,软流圈沿柱身上涌,其柱头上方形成幔壳混熔花岗质岩及相应Au、Cu、Mo、Pb-Zn等矿集区,并于柱身与岩石圈块体陡接触带,形成中基性杂岩及相应富Fe矿集区;(b)褶皱带区,在软流圈上涌柱上方形成近幔源型花岗质岩,相应为Cu、Au、Pb-Zn、Mo、Ag矿集区;(c)南岭带,软流圈层在适当深度、热量充足、较大范围内"平卧",因热传导而致使地壳内物质部分重熔,形成壳源型花岗质岩及相应的W、Sn、稀有元素矿集区;(2)新生代油气田:(a)与太平洋板块俯冲有关的软流圈上涌,其上方出露玄武岩,形成较大型油田;(b)与裂陷盆地有关的软流圈上涌,其上方形成大型油田,也有中小型油田.软流圈上涌与大地构造:中生代J-K时期,通过构造力特征等的综合分析,阐明燕山运动的根源及其影响;新生代侧重剖析大陆裂谷相关特征.总之,软流圈上涌是岩石圈减薄,以及中、新生代构造-岩浆-矿集区形成的根源.     

中国金矿资源特征及勘查方向概述

基于金矿成矿地球动力学环境以及矿床基本地质特征等,将中国金矿床类型归纳为11 类,其中以构造破碎带蚀变岩型、中深成侵入岩体内及其外接触带型、卡林-似卡林型、浅变质碎屑岩中热液型、陆相火山岩型等为主要找矿类型;成矿年代以中生代、新生代为主。在中国Ⅲ级成矿区带划分基础上,总结研究大地构造单元、地质演化、成矿地质条件、空间分布特征、金矿类型、区域成矿要素、资源量等,初步厘定42 个金矿集区,其空间呈集中分布特征。根据金矿勘查单位面积的钻探数量,初步将中国金矿集区划分为高、中、低工作程度区,高程度区主要分布在中东部地区;除砂金矿外,中国88.12%的岩金（伴生金） 矿探矿深度在500 m 以上,说明探矿钻探验证偏少、偏浅。文章还探讨了中国金矿集区资源找矿潜力,提出了勘查找矿方向和建议,指出中东部老矿山深部、外围和西部金矿集区特别是位于新疆、青海、西藏等地区的,是未来找矿潜力重点区域,未查明资源储量巨大。     

谈塔里木板块开合构造与层次成矿问题——以层控型金属矿床为例

通过塔里木板块的构造开合演化及古地理变迁,去追索层控型金属矿床成矿的时空规律,从而划分出老(元古代,以中元古代为主)、中(晚古生代,以泥盆纪-石炭纪为主)、青(中新生代,以白垩纪-新近纪为主。)三个集中成矿区间(期),并言明其层次成矿构造属性及空间分布格局。     

Spatial distribution features of Ag, Ag-Pb, Au, Mo and Pb deposits (mineralization spots) in Xiong' er Mountain, western Henan Province, and their implicatiotion for prosoecting

对豫西熊耳山121个Ag、Ag-Pb、Au、Mo及Pb矿床(点)的空间分布特征进行了分析,并在此基础上探讨了熊耳山地区找矿潜力区.在经度方向上,它们集中于熊耳山的东、西两端,而在中部(111.45°～111.50°和111.60°～111.65°)出现两个矿床频数低值;在纬度方向上,矿化主要集中分布于34.10°～34.25°的中部地带.121个矿床(点)的高程(采矿平硐海拔高度)集中分布于600～750m、800～1 050m和1 100～1 200m三个高程区间内,熊耳山东、西两端大型船Pb、Au和Mo矿床的高程大致相当.121个矿床(点)组成了6条矿化种类各异和走向不同的矿化条带,分别为近NW向的Ag及Ag-Pb矿化条带(M1)和Au(Mo、Pb)矿化条带(M3)、近NE向的Au(Mo、Pb)矿化条带(M2)、近EW的Pb-Au(Mo)矿化条带(M4)、近NNW向的Au矿化条带(M5)和近NS向的Au(Mo、Pb)矿化条带(M6),其走向均与区域以及矿床控矿构造的走向大致相当.121个矿床(点)在空间三个投影面中均遵循分形丛集分布,并且存在两个无标度网格区,显示了多重分形的特征,发现熊耳山矿集区的分布具有约10km等间距的特征,并结合透岩浆流体成矿理论对熊耳山地区进一步的成矿潜力区进行了分析.     

滇西三江地区中新生代“盆山”耦合运动学过程

滇西三江地区中新生代盆山格局是研究盆山耦合的典型实例。本文通过解析该区叠加构造变形期次和样式,理清其中新生代的盆山耦合关系,并探讨思茅盆地对相邻造山演化的沉积响应过程。研究表明,三江地区经历了主碰撞造山带与前陆盆地耦合(T1-T2)、后碰撞造山带与伸展盆地耦合(T3-K)以及陆内"盆山"共变(E-Q)三个盆山耦合运动学过程。兰坪-盆地内复理石、山前磨拉石到红色碎屑岩的沉积序列响应了相邻造山带从主碰撞阶段向后碰撞阶段的演化,该阶段盆地转换过程受控于拆沉作用和岩浆底侵作用等深部动力学机制。     

Types,characteristics, and time–space distribution of molybdenum deposits in China

Molybdenum exploration activity in China has accelerated tremendously during the past decade owing to the continuous, increasing demand for Earth resources. China possesses the largest Mo reserves in the world (exceeding 19.6 Mt). The major ore deposits are of porphyry, porphyry–skarn, skarn, vein, and sedimentary types. Porphyry molybdenum deposits contain 77.5% of the Chinese Mo reserves, with lesser amounts in porphyry–skarns (13%), skarns (5.1%), and veins (4.4%). Exploitation of sedimentary-type molybdenum deposits thus far has been uneconomical. The six Mo provinces are in the Northeast China, Yanliao, Qinling–Dabie, middle–lower Yangtze River Valley, South China, and Sanjiang areas. We recognize six ore-forming periods: (1) Precambrian (>541 Ma), (2) Palaeozoic (541–250 Ma), (3) Triassic (250–200 Ma), (4) Jurassic–Early Cretaceous (190–135 Ma), (5) Cretaceous (135–90 Ma), and (6) Cenozoic (55–12 Ma). The abundance of Mo ore deposits in China reflects the occurrence of multiple periods of tectonism, involving interactions between the Siberian, North China, Yangtze, India, and Palaeo-Pacific plates. Precambrian molybdenum deposits are related to Mesoproterozoic volcanism in an extensional setting. Palaeozoic Cu–Mo deposits are related to calc-alkaline granitic plutons in an island arc or a continental margin setting. Triassic Mo deposits formed in the syn-collision–postcollision tectonic setting between the Siberian and North China plates and between the North China and Yangzi plates. Jurassic–Early Cretaceous molybdenum deposits formed along the eastern margin of Asia and are associated with the palaeo-Pacific plate-subduction tectonic setting. Cretaceous Mo deposits are related to high-K calc-alkaline granitic rocks and formed in a lithospheric thinning setting. Cenozoic molybdenum deposits formed in a collision setting between the Indian and Eurasian continents and the subsequent extensional setting.     

中国莫霍面形态与岩金矿分布关系

我国东、西两条地幔陡坡带明显地控制着岩金矿分布，特别是它们相互联结的秦岭段的幔坡域，更是岩金矿发育地区，东部地幔台坪隆起区金成矿作用强烈，在金成矿上，华南地区与华北地区可相互媲美，故在华南找岩金矿是极有前景的。中部地幔台坪区是我国微细浸染型金矿最主要的分布地区。幔坳与岩金矿分布的关系次之，以天山幔槽和敦化幔坳的岩金矿分布较多。幔隆本身与岩金矿分布的关系不密切，但其周边地区岩金矿却发育，如四川盆地幔隆和准噶尔幔脊周边的金矿分布多即是反映。     

Mechanism of the Basin-Mountain Metallogenic System in Himalayan Period in Sanjiang Concentration Area, Southwest China

MECHANISM OF THE BASIN-MOUNTAIN METALLOGENIC SYSTEM IN HIMALAYAN PERIOD IN SANJIANG CONCENTRATION AREA,SOUTHWEST CHINA     

山东焦家金矿矿床成因及成矿模式

胶东矿集区是我国金矿资源的主要密集区,重点解剖焦家金矿有助于深化对区域同类矿床的成因认识.文章从矿床地质、矿床地球化学、稀土元素地球化学、同位素地球化学、成矿流体以及成矿构造环境等几个方面对该矿床进行了研究,在上述的基础上探讨了焦家金矿的矿床成因模式,认为华北板块与华南板块碰撞的后造山作用引起的构造转折,导致地壳拉张,深部物质上涌,在有利的部位大规模成矿.     

滇西保山地块金厂河矿集区铁铜金铅锌多金属矿床成矿系统

滇西保山地块是西南“三江”特提斯构造带的重要组成部分,其大地构造位置处于藏-滇-泰-马中间板块中段,是近年来科学研究和地质找矿的热点地区之一。受区域构造演化的影响,保山地块先后历经原、古、中、新特提斯演化,并发生了多期成岩成矿事件,在北部形成了以金厂河铁铜铅锌矿、核桃坪铅锌矿、陡崖铁铜多金属矿、黑牛凹金矿、黄家地金矿等为代表的金厂河铁铜金铅锌多金属矿集区。区内矿床在成矿空间上具有明显的分带性,单个矿床在垂向上、平面上均呈有规律地分布,其分带标志除了矿床类型外,还表现在有用矿物组合及元素分带。由下往上、由内向外均有Fe→Cu-Fe→Cu-Pb-Zn→Au矿种分带及“矽卡岩型→构造蚀变岩型→石英脉型”的矿床类型分带,成矿元素均从高温到中低温变化。成矿系统的分析表明,区内各代表性矿床中矿石的硫、铅同位素组成和变化范围较为一致性,矿床的形成具有相似的成矿流体,表明不同类型的矿化可能形成于早白垩世中特提斯洋的闭合过程。本文综合区内构造演化、典型矿床地质特征、各地质事件发生的先后关系,建立了金厂河矿集区铁铜金铅锌多金属矿床成矿模式,以期为该区深边部地质找矿提供科学依据。     

新生代构造抬升与斑岩型铜、金矿床的次生富集作用

以中国西南"三江"(澜沧江-金沙江-怒江)地区西范坪铜矿床、玉龙铜矿床和北衙金矿床为例说明了该地区斑岩型铜或金矿床的次生分带特征,概述了青藏高原、滇川西部高原的隆升,以及新生代构造抬升对地表化学风化的影响;指出西范坪铜矿床、玉龙铜矿床和北衙金矿床等明显经历过表生成矿作用的典型斑岩型矿床均位于青藏高原强烈隆升区的边部或边缘地带,新生代构造抬升对这些地段气候、地形的影响大大促进了地表的化学风化作用;认为新生代强烈隆升可能是导致这些矿床发生强烈次生富集作用的深层次原因.     

Gold mineralization in China: Metallogenic provinces,deposit types and tectonic framework

We present a review of major gold mineralization events in China and a summary of metallogenic provinces, deposit types, metallogenic epochs and tectonic settings. Over 200 investigated gold deposits are grouped into 16 Au-metallogenic provinces within five tectonic units such as the Central Asian orogenic belt comprising provinces of Northeast China and Tianshan-Altay; North China Craton comprising the northern margin, Jiaodong, and Xiaoqinling; the Qinling-Qilian-Kunlun orogenic belt consisting of the West Qingling, North Qilian, and East Kunlun; the Tibet and Sanjiang orogenic belts consisting of Lhasa, Garzê-Litang, Ailaoshan, and Daduhe-Jinpingshan; and the South China block comprising Youjiang basin, Jiangnan orogenic belt, Middle and Lower Yangtze River, and SE coast. The gold deposits are classified as orogenic, Jiaodong-, porphyry–skarn, Carlin-like, and epithermal-types, among which the first three types are dominant.The orogenic gold deposits formed in various tectonic settings related to oceanic subduction and subsequent crustal extension in the Qinling-Qilian-Kunlun, Tianshan-Altay, northern margin of North China Craton, and Xiaoqinling, and related to the Eocene–Miocene continental collision in the Tibet and Sanjiang orogenic belts. The tectonic periods such as from slab subduction to block amalgamation, from continental soft to hard collision, from intracontinental compression to shearing or extension, are important for the formation of the orogenic gold deposits. The orogenic gold deposits are the products of metamorphic fluids released during regional metamorphism associated with oceanic subduction or continental collision, or related to magma emplacement and associated hydrothermal activity during lithospheric extension after ocean closure. The Jiaodong-type, clustered around Jiaodong, Xiaoqinling, and the northern margin of the North China Craton, is characterized by the involvement of mantle-derived fluids and a temporal link to the remote subduction of the Pacific oceanic plate concomitant with the episodic destruction of North China Craton. The Carlin-like gold metallogenesis is related to the activity of connate fluid, metamorphic fluid, and meteoric water in different degrees in the Youjiang basin and West Qinling; the former Au province is temporally related to the remote subduction of the Tethyan oceanic plate and the later formed in a syn-collision setting. Porphyry–skarn Au deposits are distributed in the Tianshan-Altay, the Middle and Lower Yangtze River region, and Tibet and Sanjiang orogenic belts in both subduction and continental collision settings. The magma for the porphyry–skarn Au deposits commonly formed by melting of a thickened juvenile crust. The epithermal Au deposits, dominated by the low-sulfidation type, plus a few high-sulfidation ones, were produced during the Carboniferous oceaic plate subduction in Tianshan-Altay, during Early Cretaceous and Quaternary oceanic plate subduction in SEt coast of South China Block, and during the Pliocene continental collision in Tibet. The available data of different isotopic systems, especially fluid D–O isotopes and carbonate C–O systems, reveal that the isotopic compositions are largely overlapping for different genetic types and different for the same genetic type in different Au belts. The isotopic compositions are thus not good indicators of various genetic types of gold deposit, perhaps due to overprinting of post-ore alteration or the complex evolution of the fluids.Although gold metallogeny in China was initiated in Cambrian and lasted until Cenozoic, it is mainly concentrated in four main periods. The first is Carboniferous when the Central Asian orogenic belt formed by welding of micro-continental blocks and arcs in Tianshan-Altay, generating a series of porphyry–epithermal–orogenic deposits. The second period is from Triassic to Early Jurassic when the current tectonic mainframe of China started to take shape. In central and southern China, the North China Craton, South China Block and Simao block were amalgamated after the closure of Paleo-Tethys Ocean in Triassic, forming orogenic and Carlin-like gold deposits. The third period is Early Cretaceous when the subduction of the Pacific oceanic plate to the east and that of Neo-Tethyan oceanic plate to the west were taking place. The subduction in eastern China produced the Jiaodong-type deposits in the North China Craton, the skarn-type deposits in the northern margin (Middle to lower reaches of Yangtze River) and the epithermal-type deposits in the southeastern margin in the South China Block. The subduction in western China produced the Carlin-like gold deposits in the Youjiang basin and orogenic ones in the Garzê-Litang orogenic belt. The Cenozoic is the last major phase, during which southwestern China experienced continental collision, generating orogenic and porphyry–skarn gold deposits in the Tibetan and Sanjiang orogenic belts. Due to the spatial overlap of the second and third periods in a single gold province, the Xiaoqinling, West Qinling, and northern margin of the North China Craton have two or more episodes of gold metallogeny.     

三江特提斯复合造山与成矿作用

三江特提斯构造带作为全球特提斯构造在中国大陆最典型的发育地区,经历了复杂而完整的演化历史:从晚前寒武纪—早古生代泛大陆解体与原特提斯洋形成,经古特提斯多岛弧盆系发育与古生代—中生代增生造山/盆山转换,到新生代印度-亚洲大陆碰撞与叠加改造,完好地记录了超级大陆裂解→增生→碰撞的完整演化历史和大陆动力学过程,可谓是中国大陆构造演化的典型缩影。复合造山和叠加转换导致了三江特提斯域复杂的成矿演化,主要表现为:①在构造转换阶段,于元古代刚性基底基础上发育大量叠加改造型矿床,具有独特的金属组合(Sn-Cu,Sn-Pb-Zn,Fe-Cu等);②火山成因块状硫化物(VMS)矿床伴随特提斯岩石圈演化,连续发育于陆缘裂谷(Cu)→初始洋盆(Cu-Zn)→大洋岛弧(Cu-Zn-Pb)→弧间裂谷或弧后盆地(Pb-Zn-Ag)→弧-陆碰撞裂陷盆地(Cu-Pb-Zn)等阶段及诸环境;③特提斯阶段的岛弧型斑岩Cu矿被碰撞造山阶段的大陆型斑岩Cu矿所取代;④世界级规模的金属成矿带和巨型矿床,在新生代碰撞造山期爆发式产生。尽管已有的研究从整体上勾画出了三江特提斯域的基本构造特征和成矿面貌,但仍有许多重要问题尚未解决:①三江复合造山带构造叠加、...     

藏南罗布莎铬铁矿床铬尖晶石矿物学与矿床成因研究

西藏罗布莎铬铁矿床是我国目前研究程度最高、规模最大、地幔橄榄岩相对新鲜的豆荚状铬铁矿床,主要工业矿体产于蛇绿岩壳-幔边界(即岩石莫霍面)以下方辉橄榄岩相带一定层位中,主要有块状、浸染状和豆状等矿石类型。罗布莎铬尖晶石成分变化范围大,依据铬尖晶石的化学成分与矿物学研究至少可识别出3个期次铬尖晶石:(1)成矿前期铬尖晶石,主要以熔蚀残斑晶、出溶晶及少量自形晶形式产于方辉橄榄岩中,以富Al₂O₃为特征,Cr^#值变化范围大(17.19~66.30),且大部分小于60,并与Mg^#值呈负相关关系,由出溶晶,残斑晶到自形晶铬尖晶石,总体表现向富Cr、Fe的方向演变;(2)成矿主期铬尖晶石,可分为早、晚2个阶段。早阶段铬尖晶石主要以它形晶产于不同类型铬铁矿石中,部分呈自形-半自形晶产于铬铁矿体的纯橄岩外壳中,主要以富铬为特征,矿石中Cr^#值变化范围小(70.08~87.03),均大于60,其中块状铬铁矿具有最高的Cr^#和Mg^#,由纯橄岩外壳中副矿物铬尖晶石向豆状、浸染状矿石以及块状矿石演变过程中,铬尖晶石化学成分总体向更富Cr、富Mg方向演变;晚阶段铬尖晶石:主要以自形-半自形晶产于具堆晶结构的纯橄岩相带中,成份上以更加富而贫Al₂O₃,且具有最低Mg^#(18.79~44.77)值为特征;(3)成矿晚期铬尖晶石,主要以网状集合体产于豆状-网脉状(眼眉状)矿石中,以更贫Al、富Fe为特征,具有最高的Cr^#值和低的Mg^#值。综合研究表明,罗布莎铬铁矿中的铬主要来自原始地幔岩本身,且主要来自于地幔橄榄岩中2种辉石的不一致熔融和对副矿物铬尖晶石的改造,原始富铬矿物可能来自地幔深部的八面体硅酸盐矿物。罗布莎豆荚状铬铁矿的成矿作用具有多期次、多成因、多种构造背景下成矿特征,成矿作用过程经历了由大洋中脊(MOR)扩张环境向岛弧体系俯冲环境的转变过程,洋内俯冲带之上(SSZ)的弧间盆地环境是形成冶金级豆荚状铬铁矿的最为有利构造环境。研究提出了罗布莎铬铁矿的"三阶段"成矿模式,即,经历了大洋中脊预富集阶段,俯冲带之上主成矿阶段及之后的构造抬升改造阶段。纯橄岩与方辉橄榄岩接触带之下的方辉橄榄岩相带是寻找较大规模铬铁矿床的有利地带。     

华南地区中生代多金属矿床形成与地幔柱关系

华南地区中生代多金属矿床形成与地幔柱关系毛景文李红艳王登红彭聪（中国地质科学院矿床地质研究所,北京１０００３７）关键词多金属矿床地幔柱构造华南地区在华南地区,中生代有大量花岗质岩浆的侵位和成矿,形成了以柿竹园钨多金属矿床、大厂和个旧超大型锡多金属矿床...