全球红土型镍矿床的基本成矿规律

全球红土型镍矿床具有明显的时空分布规律, 红土型镍矿体则具有明显的垂向分带规律。红土型镍矿化强度明显受成矿母岩成分(包括镍含量、岩石地球化学成分、矿物成分)、气候、地形地貌、水文地质、构造地质、成矿时间长短及风化壳成熟度的影响和控制。红土型镍矿的矿床类型主要受气候、大地构造背景、构造隆升状态控制, 并受地形地貌、排水条件、成矿母岩岩性及其蛇纹石化程度影响。     

元江镍矿区硫化镍矿床找矿思路探讨

总结了墨江-元江红土镍矿床的地质特征,并根据该区已发现超基性岩体接触带中岩浆热液改造型硫化镍矿的事实,对今后在区内寻找硫化型镍矿床的可能性及其有利地段进行了探讨.     

元江镍矿区硫化镍矿床找矿思路探讨

总结了墨江-元江红土镍矿床的地质特征，并根据该区已发现超基性岩体接触带中岩浆热液改造型硫化镍矿的事实，对今后在区内寻找硫化型镍矿床的可能性及其有利地段进行了探讨。     

在萨德伯盆地用射频层析成像法圈定硫化镍矿床

１９９４年在国际镍公司（ＩＮＣＯ）的三个矿区进行了射频层析成像（ＲＦＴ）探测,试验这种技术圈定萨德伯里镍硫化矿床的能力。用一台中国生产的ＪＷ－４电偶极系数采集跨孔数据,扫描频率为０．５－５．０ＭＨｚ。在相距１００ｍ的两个钻孔之间成功地描绘了Ｍｃ Ｃｏｎｎｅｌｌ矿就的一个高导电性板状硫化镍矿体。在５ＭＨｚ的层析图像上,这个矿体表现为一个连续的强吸收带。信号振幅的数据模拟表明当发射器和接收器在矿床的两     

新疆喀拉通克铜镍矿床伴生贵金属成矿地球化学研究所

按侵位顺序早分为岩浆熔离型，深熔入型和热液叠加热矿作用，其中后二者与贵金属的 及成矿关系最为密切，尤其是热液作用。贵金属Ａｕ，Ａｇ，Ｐｔ，Ｐｄ主要在热液成矿液体分异形成的高铜块状矿体中富集；含矿岩浆在岩浆主心中深熔的时间与各成因类型矿体侵位是反序的；Ｃｕ，Ｎｉ及贵金属矿是经济源熔离和脉动式多次放作用形成的。     

煎茶岭硫化镍矿床矿石地球化学特征

通过对煎茶岭硫化镍矿床地质背景及矿石的地质地球化学研究,认为该镍矿床的形成与煎茶岭镁质超基性岩体密切相关,其成矿物质来源于深部,存在多种成矿作用,包括源自上地幔局部熔融的母岩浆在通过上地幔岩石圈上升侵位过程中发生的就地熔离作用和岩体形成后的自变质作用、中酸性岩浆侵入引起的热液叠加改造作用等.后期中酸性岩浆热液的交代改造是形成该矿床中部分富镍矿体的主要原因.该镍矿床PGE含量较低且贫铜,成因上应属岩浆熔离-热液改造型矿床.     

加拿大萨德伯里铜镍硫化矿床的成因探讨

加拿大萨德伯里矿田,是当今世界上已知最大的铜镍硫化矿矿田.本文从研究矿床地质特征入手,以典型矿床为实例,对该区矿床进行成因探讨.     

云南铂,铜镍,铬矿床的成矿模式

云南铂、铜镍、铬矿床的成矿模式罗君烈（云南省地质矿产厅）１区域成矿模式云南已评价的铂族矿床９个，铜镍矿床２个，铬均属矿点。虽然超镁铁—镁铁岩类分布较广，包括潞西、保山、孟连、德钦、哀牢山、元谋、富宁等主要岩带（区），但前震旦纪浅成—超浅成辉长—辉绿岩...     

Types and Metallogenic Models of Nickel Sulfide Deposits of China

Most of the sulfide nickel deposits in China occur on the margins of platforms and their outer mobilebelts. The ore-bearing basic-ultrabasic rock bodies were formed in the Proterozoic and Variscan. The types ofmetallogenic rock bodies include ultrahasic-basic complexes related to volcanism in eugeosynclines andultrabasic rock bodies, ultrabasic-basic complexes and basic rock bodies related to deep fractures. On the basisof ore-forming processes and modes, nickel sulfide deposits of China may be divided into two major types:in-situ magmatic liquid unmixing deposits and deep-seated magmatic liquid unmixing injection deposits. Thelatter may by subdivided into four types: single injection deposits, multiple injection deposits, and pulsatory in-jection depositis, and late injection deposits which may inject into either comagmatic rocks or other kinds ofcountry rocks. Two metallogenic models for nickel sulfide deposits are proposed in this paper.     

中国镍矿成矿规律初探

我国镍矿可分为岩浆型、海相沉积型和风化壳型3种预测类型.矿床形成时代较为连续,最早形成于中—新元古代,最晚形成于新生代,其中中—新元古代和晚古生代是形成矿床的两个高峰期;中—新元古代矿床主要分布在华北地块和扬子地块周缘,晚古生代镍矿主要分布在中亚造山带、峨眉山和塔里木大火成岩省范围内.岩浆型镍矿主要形成于大陆边缘裂解、造山带后碰撞伸展以及地幔柱3种构造背景,根据不同构造背景并结合主要岩浆作用特点,将与幔源基性—超基性岩有关的镍-铜-钴-铂族元素矿床成矿系列类型划分出与大陆裂解边缘幔源基性—超基性岩浆作用有关的镍-铜-钴-铂族元素矿床成矿亚类型、与地幔柱基性—超基性岩浆作用有关的镍-铜-钴-铂族元素矿床成矿亚类型、与造山带俯冲作用下幔源基性—超基性岩有关的镍-铜-钴-铂族元素矿床成矿亚类型、与造山带后碰撞伸展背景下幔源基性—超基性岩有关的镍-铜-钴-铂族元素矿床成矿亚类型等4种亚类型.分别对中—新元古代与大陆边缘裂解有关的镍铜(铂)矿床、寒武纪与黑色页岩有关的海相沉积型镍钼钒矿床、早二叠世与造山带伸展背景有关的镍铜矿床、晚二叠世与大火成岩省有关的镍铜(铂)矿床、新生代与风化壳有关的镍金矿床及其对应的典型矿床特征和成矿模式进行了叙述;认为大陆裂解边缘、地幔柱、造山带后碰撞伸展是我国镍矿形成的有利成矿地质背景,与邻近深大断裂、镁铁—超镁铁岩体、高MgO的原生岩浆(高镁玄武质岩浆)、深部岩浆作用、硫饱和与硫化物熔离共同组成岩浆型镍矿的6个重要地质条件.     

A Preliminary Review of the Metallogenic Regularity of Nickel Deposits in China

The nickel deposits mainly distributed in 19 provinces and autonomous regions in China are 339 ore deposits/occurrences, including 4 super large-scale deposits, 14 large-scale deposits, 26 middle-scale deposits, 75 small-scale deposits, and 220 mineralized occurrences. The prediction types of mineral resources of nickel deposits are magmatic type, marine sedimentary type and regolith type. The formation age is from the Neoarchean to the Cenozoic with two peaks in the Neoproterozoic and the late Paleozoic. The nickel deposits formed in the Neoproterozoic are located on the margin of the North China Block and Yangtze Block, and those formed in the late Paleozoic are mainly distributed in the Central Asian Orogenic Belt (CAOB), Emeishan and the Tarim Large Igneous Provinces (LIPs). Magmatic nickel deposits are mainly related with broken-up continental margin, post-collision extension of the orogenic belt and mantle plume. According to different tectonic backgrounds and main characteristics of magmatism, the Ni-Cu-Co-PGE metallogenic series types of ore deposits related with mantle-derived mafic-ultramafic rocks can be divided into 4 subtypes: (1) the Ni-Cu-Co-PGE metallogenic series subtype of ore deposits related with mantle-derived mafic-ultramafic rocks in the broken-up continental margin, (2) the Ni-Cu-Co-PGE metallogenic series subtype of ore deposits related with mantle-derived mafic-ultramafic rocks in mantle plume magmatism, (3) the Ni-Cu-Co-PGE metallogenic series subtype of ore deposits related with mantle-derived mafic-ultramafic rocks in the subduction of the orogenic belt, and (4) the Ni-Cu-Co-PGE metallogenic series subtype of ore deposits related with mantle-derived mafic-ultramafic rocks in post-collision extension of the orogenic belt. We have discussed in this paper the typical characteristics and metallogenic models for Neoproterozoic Ni-Cu-(PGE) deposits related with broken-up continental margin, Cambrian marine sedimentary Ni-Mo-V deposits related with black shale, early Permian Ni-Cu deposits related with post-collision extension of the orogenic belt, late Permian Ni-Cu-(PGE) deposits related with Large Igneous Provinces (LIPs), and Cenozoic Ni-Au deposits related with regolith. The broken-up continental margin, mantle plume and post-collision extension of the orogenic belt are important ore-forming geological backgrounds, and the discordogenic fault, mafic-ultramafic intrusion, high MgO primitive magma (high-MgO basaltic magma), deep magmatism, sulfur saturation and sulfide segregation are 6 important geological conditions for the magmatic nickel deposits.     

我国金伯利岩型金刚石矿床的若干地质特征及其找矿标志

金伯利岩型金刚石矿床是世界上重要的金刚石矿床类型:也是我国迄今所发现的唯一的金刚石原生矿床类型。本文阐述了我国金伯利岩分布的构造部位、时代、产状、与暗色岩类的关系、围岩及其蚀变特征、岩管的岩相特征、岩石类型及岩石化学特征,并指出了该类矿床的找矿标志。     

中国锡矿成矿规律概要

我国锡矿资源丰富,矿床类型比较齐全。在锡矿资源储量中占有较大比重的主要是锡石—硫化物型、矽卡岩型和石英脉型;从开采和利用角度来说,最为重要的是锡石—硫化物型和石英脉型。锡石—硫化物型主要集中在桂北、滇东等地,矽卡岩型集中分布在南岭中段湘南等矿集区、石英脉型则主要集中在华南地区的闽西、赣中、粤北、湘南等地;成矿时代以中生代最为重要;成矿大地构造背景以造山运动之后的大陆环境为主,构造变动剧烈,深大断裂纵横交错,岩浆活动频繁,特别是与锡成矿作用关系密切的中生代花岗岩类非常发育,最具特色。本次在对全国873处锡矿矿产地资料进行系统梳理的基础上,深入总结了全国锡矿的成矿规律,厘定出20个以锡为主或锡较为重要的矿床成矿系列,认为锡石—硫化物型、矽卡岩(—云英岩型)、石英脉型和岩体型4类锡矿类型,应该作为重点预测类型,并划分出44个成锡带,提出了19个重要工作部署区,并编制了中国成锡带图、中国锡矿成矿规律图等系列图件,为潜力评价预测工作提供了理论依据。     

东昆仑成矿带岩浆铜镍硫化物矿床成矿地质条件与成矿规律

东昆仑成矿带是我国重要的Au-Cu-Co-Ni-Fe-Pb-Zn及其他多金属成矿带,2011年夏日哈木超大型镍矿床的发现使东昆仑一跃成为我国重要的铜镍资源基地。经过多年的勘查,东昆仑成矿带Cu-Ni找矿取得了较大突破,陆续发现了一批具有较大找矿潜力的岩体,如石头坑德、阿克楚克塞、浪木日和尕牙河等岩体。笔者依据近些年研究的成果对东昆仑成矿带岩浆铜镍矿床的成矿规律和成矿特征作初步总结,并指出下一步找矿方向。形成的主要认识如下：东昆仑造山带至少发生了4期强度不等的Cu-Ni-Co-(PGE)成矿事件,分别为寒武纪—奥陶纪(535～445 Ma)、志留纪—泥盆纪(440～394 Ma)、二叠纪—早三叠世(271～239 Ma)与晚三叠世(233～208 Ma),其中志留纪—泥盆纪的岩体数量最多、矿化率最高,产出的矿床数量多、规模也最大,而其他期次岩体的数量少、规模小与矿化弱;与其他成矿期的岩体零星分布于整个东昆仑成矿带不同,志留纪—泥盆纪岩体严格产在昆中断裂以北,又以昆中带数量最多,丛聚性明显;成矿具有显著的专属性,成矿岩体均以杂岩体产出,岩相发育齐全,富含贵橄榄石和斜方辉石的超镁铁质岩是最重...     

我国硅灰石矿床成因类型及地质特征

前言在我国,硅灰石是一种新兴的工业矿物原料。自1975年于湖北省大冶县小箕铺发现有一定规模的硅灰石矿床以来,我国硅灰石地质及其工业应用的研究发展很快。短时间内找到并探明了一批质量好、又有一定规模的硅灰石矿床;以硅灰石为主要原料的低温快烧釉面砖的研     

我国斑岩铜矿特征及其成矿物质来源

斑岩铜矿是最重要的铜矿类型之一,因此引起地质工作者注意。笔者曾于1974年至1977年参预了德兴、多宝山、公婆泉、白山堂、太阳山和铜矿峪等一些重要矿床和矿化点的研究,以后又收集过某些资料。本文对我国斑岩铜矿特征及其成矿物质来源提出某些初步认识,请读者批评指正。     

Outline of Metallogenic Regularity of Bauxite Deposits in China

Among the abundant aluminum ore resources in China, bauxite is dominated, which is mainly distributed in 19 provinces and regions, including Shanxi, Henan, Guizhou and Guangxi. The major deposit type of bauxite is paleo-weathering crust sedimentary type, and the other one is the accumulation type. The main metallogenic period is the late Paleozoic Era followed by the Cenozoic Era. The metallogenic tectonic background is characterized by a cratonic environment. This paper summarizes the bauxite metallogenic regularity based on the characteristics of bauxite resources, bauxite deposit type, bauxite metallogenic belt and metallogenic series in China, and 15 bauxite metallogenic belts, 8 bauxite metallogenic series and 7 bauxite ore concentrated areas were identified in the study. This paper also provides a theoretical basis for the evaluation of the potential of bauxite resources.