赣西卡林型金矿找矿评价标志及找矿模式

从地球化学，地层岩性，构造，岩浆岩，金矿化及相关矿化，蚀变，找矿矿物学等方面阐明了赣西地区卡林型金矿的区域找矿评价标志及矿床评价标志，建立了赣西地区卡林型金矿“三个有利赋矿层位，三个有利赋矿岩性和三种有利元素组合”的找矿模式。     

江苏省南京市江宁区汤山金矿地质特征及找矿前景分析

文章通过对江苏省南京市江宁区汤山金矿矿区地质特征、矿体地质特征、围岩蚀变及矿床成因、成矿控矿条件的分析研究,并与国内外＂卡林型＂金矿进行对比。汤山金矿与＂卡林型＂金矿有较多的相似之处,论述了在该矿区探索和寻找＂卡林型＂金矿的前景。     

国内外卡林型金矿对比研究

卡林型金矿是一种主要产于碳酸盐岩－碎悄岩建造中的微细粒浸染型金矿床，以储量大、品位低、金粒度极细为特点，主要分布于美国和中国，区域地质、成矿条件、控矿因素、矿化特征具有明显的可类比性。卡林型金矿区域成矿模式可概括为：金、汞、砷、锑等成矿元素大规模超常聚集，矿质运移－传输，矿床（矿体）的定位等三大系统（阶段）。文中亦对国内外卡林型金矿的成矿系列、成矿模式作对比研究。     

黔西南微细浸染型金矿控矿条件及找矿标志

70年代末,在贵州省西南部发现了一系列微细浸染型金矿床.矿床地质特征和金的赋存状态与美国卡林金矿相似.现将本区金矿划分为层控型、断层型和综合型3类,分别总结了控矿条件和找矿标志.     

卡林型金矿床控矿构造特征的研究

卡林型金矿床主要产于狭义扬子地块周边的古生代、中生代坳陷区内，即稳定地块与活动地块之间的构造过渡带。明显受构造控制，具有分级控制特点，区域性深大断裂控制着金矿带的分带，旁侧次级断裂，短轴背斜或穹隆控制着矿床，更低序次断裂控制着矿体的定位。     

湖北崇阳小水金矿地质特征及控矿地质因素

湖北崇阳方山背斜南东翼为鄂南片区的金矿聚集区,金矿床多分布于震旦系陡山沱组层间破碎带中。小水金矿是该地发现的一处小型金矿,含矿岩性以硅化碎裂页岩夹白云岩、硅化白云岩夹页岩为主。总结该金矿床成矿地质特征,结合区域地质分析,认为震旦系陡山沱组构成了该区金矿床的初始矿源层,矿体受层间破碎带及其次级构造裂隙控制明显,陡山沱组第二岩性段含泥质白云岩、页岩特有的岩性组合是成矿流体聚集和成矿金属卸载的有利空间。通过与我国典型卡林型金矿成矿地质特征的对比,指出小水金矿应属卡林型金矿,对方山地区金矿的成因认识有一定的借鉴意义。     

甘肃阳山金矿带地球动力学体制与多因耦合成矿作用

通过阳山金矿带区域演化史的总结分析,结合西秦岭南部地区金矿成矿时代及其与造山运动的关系研究成果,对阳山矿带的区域成矿地球动力学体制进行了厘定;阳山超大型金矿和西秦岭地区大多数金矿床,特别是卡林-类卡林型金矿床,主要是在碰撞造山后期隆升伸展动力学体制下形成.通过对阳山矿带各种控矿因素的成矿作用分析与研究,认为各种控矿有利因素在相对局部的空间域内充分耦合是大型、超大型金矿成矿的重要条件.     

赣西红土型金矿床地质特征,成矿地质条件和找矿前景分析

赣西红土层分布广泛,红土风化壳具有典型的红土剖面特征,红土型金矿主要形成于杂色粘土带中,分为蛇屋山式和大坊式两类。矿体呈线型—面型分布,以层状、似层状、透镜状产出,产状较平缓。矿石构造为土状、花斑状、角砾状,矿床规模小—中型。通过分析红土型金矿构造地貌条件与红土风化壳、含金矿源体、卡林型金矿的关系,认为在萍乐坳陷带中成矿条件较好,含金矿质来源丰富,构造相对稳定,地貌多低山丘陵,对成矿有利。并指出萍乐坳陷带中与卡林型金矿母岩风化有关形成的红土区是寻找红土型金矿最有利的地区,认为赣西红土型金矿具有较好的找矿前景。     

卡林型金矿床控矿构造特征的研究

卡林型金矿床主要产于狭义扬子地块周边的古生代、中生代坳陷区内，即稳定地块与活动地块之间的构造过渡带。明显受构造控制，具有分级控制特点，区域性深大断裂控制着金矿带的分带，旁侧次级断裂，短轴背料或穹隆控制着矿床，更低序次断裂控制着矿体的定位。     

黔西南卡林型金矿勘查中的构造地球化学研究

黔西南卡林型（微细浸染型）金的成矿作用在时间上与右江造山带区域地质构造热事件相扣合,金矿体形产状以及金富集程度和矿体规模在空间上受控矿构造几何学、运动学和动力学的制约。上述现象实质则是矿床成矿作用受构造地球化学行为的控制。     

西秦岭与埃达克岩和喜马拉雅型花岗岩有关的金铜成矿及找矿问题

秦岭金矿分布广,目前学术界大多认为分属于造山型和卡林型金矿两类.该区印支期花岗岩发育,大多具有埃达克岩和喜马拉雅型花岗岩(低Sr和Yb)的特点,与金铜矿在时空分布上相关.美国内华达州卡林型金矿是世界级的金矿聚集区.与卡林型金矿有关的第三纪岩浆岩(中酸性火山岩和浅成花岗岩)也具有埃达克岩和喜马拉雅型花岗岩的地球化学特征,暗示内华达卡林型金矿也来源于加厚下地壳的底部.本文讨论了埃达克岩和喜马拉雅型花岗岩有利于成矿的机理,并根据西秦岭金矿与花岗岩分布的关系,提出以夏河-宕昌-两当-凤县为界将西秦岭划分为南北两个成矿区和13个成矿聚集区:北区花岗岩发育,有利于寻找斑岩型、夕卡岩型等热液型金铜矿床;南带侵入岩少而小,有利于寻找远离岩体的金矿(包括卡林型等).鉴于西秦岭印支期埃迭克岩和喜马拉雅型花岗岩发育,金铜尤其是金矿分布多,储量大,且大多与埃达克岩或喜马拉雅型花岗岩有关,可能是中国金矿最具潜力的地区,有利于特大型金铜矿的产出,可能发展成为中国最大的金矿聚集区.为此,建议加强本区花岗岩与金铜成矿关系的研究,革新找矿思路和找矿技术方法,以实现找矿的新突破.     

扬子地块西北缘及西南缘卡林型金矿的有机质地质地球化学

扬子地块西北缘，西南缘卡林型金矿床的有机碳含量为０．０５％－８．７３％。含金建造形成的环境不同，其改造成的金矿床的有机碳含量不同；矿化主岩的岩性不同，基有机碳的含量不同。由浊积岩型含金建筑改造成的卡林型金矿床，其干酪根属Ⅱ型酪根，原始有机母质属还原环境沉积的海相菌藻类生物演化成的腐泥型有机质。     

Red Clay Type Gold Deposits in China

<正>Red clay type gold deposits,located in the south of China,are situated not only in orogenic belts,but also in inner cratons,where climate is tropical-subtropical with clear arid and humid.The lateritic weathering crust often can be divided into five zones,including topsoil,siliceous duricrust zone,multi-color zone(or red clay zone in some deposits),pallid zone and saprolite zone from surface to the base rock,several of which are absent in some deposits.The base rocks are composed mainly of carbonate rocks with minor clastic rocks,intermediate-basic volcanic rocks and intermediate-acid and alkalic intrusions.The orebodies are mainly located in the multi-color zone with part of them in the pallid and saprolite zones.The ore sources include orebodies of Carlin-type gold deposits and porphyry gold deposits,as well as gold-rich base rocks.The red clay type gold deposits experienced early-stage endogenic gold mineralization and laterization during the Tertiary and Quaternary.The areas with endogenic gold deposits,especially Carlin-type gold deposits and porphyry gold deposits in karst depressions on the plateau,structual erosional platforms in the middle-lower mountains,and intermountain basins in southern China are well worth studying to trace red clay type gold deposits.     

Yangshan Gold Deposit: The Largest Carlin and Carlin-like Type Gold Deposit in China

Gold Headquarter of the CAPF has discovered the Yangshan super large-scale gold depositin Gansu Province, which is a great breakthrough of gold exploration and prospecting in WesternQiniing Mountains of China. The gold resources of this deposit achieved 308 tons with increasingpotentials. Preliminary geological investigations indicate that the Yangshan gold deposit is located inthe intra-continental collision orogenic belt; and the deposit was formed during the continent-continentcollision orogenic processes. The geological characteristics of the deposit are similar to that of thetypical Carlin-type gold deposits, while differences still exist. The ore-forming background is notablydifferent from the Carlin gold deposit province in the United States; and the ore-forming fluids aresimilar with that of the orogenic-type gold deposit. Accordingly, the Yangshan gold deposit is atransitional type between the Carlin-type and the orogenic type gold deposits. At present, the Yangshangold deposit is the largest Carlin and Carlin-like type gold deposit that is ever discovered in China.Researches on metaliogeny, metaliogenic model and ore-enrichment regularities of the Yangshan golddeposit are crucial to meet the pressing needs of the current geological investigation and oreexploration of the deposit.     

贵州贞丰塘新寨金矿床地质特征

本文结合区域地质背景叙述了塘新寨微细浸染型金矿床地质特征，探讨了成矿与地层岩性，构造，蚀变的关系，并初步探讨其成矿条件与成矿作用。     

卡林金矿带勘查的新进展

近年来对卡林金矿带上勘查工作,在其西北端和深部发现并勘探了新的超大型金矿床.延伸了卡林金矿带的范围.讨论了超大型金矿床的地质特征.其主岩为不纯碳酸盐或细屑岩,成矿与中酸性火成岩,新生代火山岩有关,并且与板块构造的演化有关.提出卡林型金矿与裂谷作用有关的认识.     

秦岭卡林型金矿床及相关问题探讨

鉴于目前对沉积岩型金矿、卡林型金矿概念和类型划分存在分岐,该文在对秦岭沉积岩区浸染状金矿研究基础上,主张将沉积岩为容矿岩石的金矿床划分为广义和狭义两类：沉积岩型金矿床是具有广义内涵的一类金矿,包容了从沉积－轻微改造,到沉积－强烈改造的一类热液金矿;可划分四种亚类：卡林型、变质细碎屑岩型、热水沉积岩型、脉状体型。卡林型金矿床是狭义内涵的金矿类型,属于沉积岩型金矿类型中的重要亚类;在区域金成矿密集区内,可构成卡林型矿床地球化学系列。建议不要将沉积岩型金矿和卡林型金矿相互代替使用或等同起来。秦岭沉积岩区卡林型金矿与美国卡林典型矿床有较好的类比性。矿床具有沉积－轻微改造的中—低温热液成因特征。     

美国内华达Goldstrike矿区卡林型贝茨金矿同变形的富矿分带(续)

(接第 1期第 1 6页 )3　富矿分带与控制因素贝茨金矿中不同矿石矿物组合和蚀变类型的分布与构造背景、围岩岩石及在矿体中的位置有关。根据形态、矿物组成和地质背景可分出几种空间形式截然不同的矿石类型 ,彼此之间由废石或低含金量的岩石所分隔。富矿体的地球化学、矿物学、地质及冶金方面的分带在三维空间上是连续的。富矿体的形状和定位与 Peters向斜构造的特征 ,沉积岩的岩石组成以及闪长岩接触带的几何形态和厚度有关 (图 6 A,B)。根据对不同的矿石类型和围岩类型的研究结果 ,对不同的富矿体进行了分类和判别。 Pe-ters( 1 996 ,1 9…     

Yangshan Gold Deposit:The Largest Carlin and Carlin-like Type Gold Deposit in China

Gold Headquarter of the CAPF has discovered the Yangshan super large-scale gold deposit in Gansu Province, which is a great breakthrough of gold exploration and prospecting in Western Qinling Mountains of China. The gold resources of this deposit achieved 308 tons with increasing potentials. Preliminary geological investigations indicate that the Yangshan gold deposit is located in the intra-continental collision orogenic belt; and the deposit was formed during the continent-continent collision orogenic processes. The geological characteristics of the deposit are similar to that of the typical Carlin-type gold deposits, while differences still exist. The ore-forming background is notably different from the Carlin gold deposit province in the United States; and the ore-forming fluids are similar with that of the orogenic-type gold deposit. Accordingly, the Yangshan gold deposit is a transitional type between the Carlin-type and the orogenic type gold deposits. At present, the Yangshan gold deposit is the largest Carlin and Carlin-like type gold deposit that is ever discovered in China. Researches on metallogeny, metallogenic model and ore-enrichment regularities of the Yangshan gold deposit are crucial to meet the pressing needs of the current geological investigation and ore exploration of the deposit.