IF 1.8 3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.07.06

Xinkai Chen, Zhenhua Zhou

引用次数: 0

Discovery of the Late Carboniferous alkaline volcanic rocks in the Guyang area, eastern Yinshan Block, and its geological implications 阴山地块东部固阳地区晚石炭世碱性火山岩的发现及其地质意义

IF 1.8 3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.03.03

Zhu Weipeng, Tianfeng Wei, Wei Chunjing

引用次数: 0

Distribution, occurrence and enrichment mechanism of key metals of selenium, tellurium and cobalt in Wushan copper deposit, Jiurui ore concentration area, Jiangxi Province 江西九瑞矿集中区巫山铜矿关键金属硒、碲、钴的分布、赋存状态及富集机理

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.10.16

CHEN XiQuan, ZHOU TaoFa, WANG Biao, LIU Xin, PENG Kang

{"title":"Distribution, occurrence and enrichment mechanism of key metals of selenium, tellurium and cobalt in Wushan copper deposit, Jiurui ore concentration area, Jiangxi Province","authors":"CHEN XiQuan, ZHOU TaoFa, WANG Biao, LIU Xin, PENG Kang","doi":"10.18654/1000-0569/2023.10.16","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.10.16","url":null,"abstract":"武山铜矿床是长江中下游成矿带九瑞矿集区内典型的层控-接触带矽卡岩型铜多金属矿床,铜资源量达到大型,此外还共生硒、碲、钴、镓、铊等关键金属矿产,具备良好的矿产资源综合利用前景,但矿床中关键金属的分布规律、赋存状态和富集机制等研究尚未开展。本文以武山铜矿床为研究对象,系统采集了矿床南矿带接触带矽卡岩型矿体3条勘探线(W3-2、S4-2、N6-1)、北矿带层控硫化物型矿体3条勘探线(E9-2、E2-1、W4-1)和层控矽卡岩型矿体1条勘探线(E7-3)代表性岩矿石样品。通过光学显微镜和扫描电镜的观察,结合全岩地球化学和矿物原位LA-ICP-MS分析,查明了矿床中硒、碲、钴等关键金属的空间分布规律与赋存状态,初步探讨了硒、碲、钴的迁移沉淀机制。研究结果表明矿床中伴生硒、碲、钴的估算资源量分别为5513t、611t和9597t,均达到大-中型规模;武山矿床是成矿带内硒含量最高、潜在资源量最大的矿床。北矿带矿体中Se、Te、Co含量明显高于南矿带,北矿带中部成矿中心向东西远端,矿体中Se、Te、Co含量规律性增高。矿石中Se、Te、Co含量与S含量具有较强的正相关性,矿石中硫化物的含量是关键金属含量主要控制指标;Se和Co富集于含铜黄铁矿矿石、含铜白云岩矿石、含铜矽卡岩矿石(高硫)中;Te富集于含铜黄铁矿矿石和含铜白云岩矿石中。矿床中硒、碲主要以独立矿物和硫化物中类质同象替换两种赋存形式,钴则主要以Co2+类质同象形式进入黄铁矿矿物晶格。矿床中硒、碲随着成矿流体温度降低、硫逸度升高、氧逸度降低、pH值升高逐渐沉淀富集;钴主要随着硫化物的沉淀富集在黄铁矿中。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135798962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

General characteristics and research progress of tellurium mineralization 碲成矿的一般特征及研究进展

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.10.17

GUO XianZheng, ZHOU TaoFa, FAN Yu

{"title":"General characteristics and research progress of tellurium mineralization","authors":"GUO XianZheng, ZHOU TaoFa, FAN Yu","doi":"10.18654/1000-0569/2023.10.17","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.10.17","url":null,"abstract":"碲作为稀散元素,很少形成独立矿床,主要以共伴生形式产出于多个类型矿床中,包括铜镍硫化物和铂族矿床、铁氧化物铜金(IOCG)矿床、块状硫化物(VMS)矿床、斑岩矿床、矽卡岩矿床、造山型金矿、卡林型金矿和浅成低温热液矿床等。研究表明,碲元素可以形成上百种碲矿物,除了自然碲之外,多与Au、Ag、Pb、Bi、Cu等形成碲化物,与S或者Se形成碲的硫化物或硒化物,也可以形成碲酸盐、硅酸盐、磷酸盐、硫酸盐等矿物;此外Te还可以以类质同象形式替换寄主矿物中的元素。在成矿带尺度、矿床尺度及其矿石中碲均表现出极不均匀的分布特征,与主矿种Cu、Au、Ag等具有成因关系。碲具有多来源特征,可以源自地幔,也可以是浅部壳源岩浆或是围岩地层提供。碲矿化一般发生在成矿的中晚阶段,流体可通过混合作用、水岩反应、沸腾作用等改变体系的物理化学条件(如pH值、硫逸度、氧逸度、碲逸度、温度等),导致流体pH值升高、硫逸度和氧逸度降低,碲逸度升高,这是诱发碲矿物富集和沉淀的主要机制。碲由于其受控成矿条件较为特殊,需要着重加强碲富集成矿的关键控制因素、成矿物质来源和富集沉淀机制的研究。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135799787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metallogenic mechanism of cobalt in the Zhuchong cobalt-rich skarn iron deposit in the Middle-Lower Yangtze River Valley Metallogenic Belt: Constrained by in-situ sulfur isotopes and zircon U-Pb dating 长江中下游成矿带朱冲富钴矽卡岩铁矿床钴成矿机制:原位硫同位素和锆石U-Pb定年约束

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.10.10

LIANG Xian, WANG FangYue, ZHOU TaoFa, WEI ChangShuai, ZHANG Long, GUO XianZheng, ZHANG Kun

{"title":"Metallogenic mechanism of cobalt in the Zhuchong cobalt-rich skarn iron deposit in the Middle-Lower Yangtze River Valley Metallogenic Belt: Constrained by in-situ sulfur isotopes and zircon U-Pb dating","authors":"LIANG Xian, WANG FangYue, ZHOU TaoFa, WEI ChangShuai, ZHANG Long, GUO XianZheng, ZHANG Kun","doi":"10.18654/1000-0569/2023.10.10","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.10.10","url":null,"abstract":"钴作为关键战略性稀贵金属,主要以共伴生形式产于多类矿床中。其中,富钴矽卡岩型铁矿床是重要的具备开发潜力的矿床类型之一,但其钴的来源和富集机制不清。朱冲富钴矽卡岩型铁矿床位于长江中下游成矿带安庆-贵池矿集区,是成矿带内新近发现的首个大型矽卡岩型富铁矿床,其伴生的钴资源量达到了中等规模。同时,朱冲富钴矽卡岩型铁矿床中钴品位在长江中下游同类矿床中最高,达190g/t。本研究对朱冲富钴矽卡岩型铁矿床开展了成矿岩体锆石的U-Pb定年和矿床垂向(钻孔剖面)上黄铁矿原位硫同位素的空间变化分析。结果表明,两个深部隐伏的岩浆岩样品的锆石U-Pb年龄分别为139.6±1.0Ma和138.9±0.6Ma,为早白垩世。垂向上,黄铁矿硫同位素总体范围为+5.3‰~+13.9‰,δ34S自上而下变化极大,且呈现较强的不均一性,明显不同于安庆铁铜矿的硫同位素组成。朱冲富钴矽卡岩铁矿自下而上矿化-蚀变分带中富钴磁铁矿矿体中黄铁矿δ34S范围为5.3‰~10.0‰;近矿透辉石矽卡岩带中脉状黄铁矿δ34S范围为12.1‰~13.9‰;蚀变闪长岩中脉状黄铁矿δ34S范围为7.1‰~10.8‰;外带矽卡岩中脉状黄铁矿δ34S范围为6.8‰~7.6‰;月山组含膏盐粉砂岩中黄铁矿δ34S范围为12.0‰~12.7‰;最上部铜头尖组粉砂岩脉状黄铁矿δ34S范围为6.1‰~7.8‰。朱冲富钴磁铁矿矿石中黄铁矿硫同位素介于月山岩体和月山组含膏盐粉砂岩硫同位素之间,矿石中硫同位素记录了两个端元的混合。长江中下游富钴矽卡岩型矿床(铁铜钴)成矿规模及品位的统计表明,钴矿化与铁铜矿床类型没有明显的对应关系,成矿热液中膏盐层硫的加入对钴矿化没有明显的影响,富钴矽卡岩型铁矿床钴主要源于岩浆热液,钴的沉淀主要受控于高温热液的演化。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135799793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution characteristics and differential enrichment mechanism of rhenium in molybdenite in the Dexing copper ore field 德兴铜矿田辉钼矿中铼的分布特征及差异富集机制

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.10.15

LENG ChengBiao, CHEN TaoLiang, REN Zhi, ZHAO Yan, WANG AnDong, WANG FangYue

{"title":"Distribution characteristics and differential enrichment mechanism of rhenium in molybdenite in the Dexing copper ore field","authors":"LENG ChengBiao, CHEN TaoLiang, REN Zhi, ZHAO Yan, WANG AnDong, WANG FangYue","doi":"10.18654/1000-0569/2023.10.15","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.10.15","url":null,"abstract":"世界上绝大部分Re赋存在斑岩型矿床的辉钼矿之中,且分布极不均匀。在矿床-矿石-矿物颗粒等不同尺度上,Re含量均存在较大差异,但造成这些差异的因素目前尚不清楚。本文以德兴矿田中富家坞和铜厂二个矿床的辉钼矿为研究对象,在细致的矿相学研究的基础上,对其开展了EPMA、LA-ICP-MS和XRD分析,同时结合前人研究资料,详细探讨了Re在这两个矿床辉钼矿中的分布规律及差异性富集机制。结果显示:富家坞和铜厂均普遍发育两种形态的辉钼矿(细粒集合体型和粗粒片状型),Re在两种辉钼矿中的分布均极为不均,但细粒集合体型相对更富Re,而同一形态辉钼矿铜厂矿床则具有更高的Re含量;同一矿床中辉钼矿结晶越晚,往往越富集Re;个别辉钼矿可见扭结现象,且扭结部位的Re含量更低,暗示后期构造变形可能导致了Re的丢失;两个矿床高Re辉钼矿和低Re辉钼矿的结构均为2H多型,表明Re含量与辉钼矿晶体结构无关。结合前人资料,本文认为成矿流体性质(如温度、盐度等)是导致铜厂和富家坞辉钼矿Re含量差异的主要因素。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"178 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135800042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Types, typical deposits, tempo-spatial distribution and tectonic settings of the copper deposits in Mongolia 蒙古铜矿类型、典型矿床、时空分布及构造背景

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.11.03

MIAO LaiCheng, LUO Ye, DORJGOCHOO Sanchir, LIU JianMing, ZOU Tao, LU ZengLong, QIN KeZhang, BAATAR Munkhtsengel

{"title":"Types, typical deposits, tempo-spatial distribution and tectonic settings of the copper deposits in Mongolia","authors":"MIAO LaiCheng, LUO Ye, DORJGOCHOO Sanchir, LIU JianMing, ZOU Tao, LU ZengLong, QIN KeZhang, BAATAR Munkhtsengel","doi":"10.18654/1000-0569/2023.11.03","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.03","url":null,"abstract":"铜是蒙古国最重要的工业资源之一,在2010年之前,一直是蒙古国最主要的经济收入来源,但之后被煤炭资源所取代。总体上,蒙古国地质矿产研究与开发程度相对较低。蒙古国铜矿床可分为斑岩型、火山成因块状硫化物(VMS)型、与花岗岩有关铜矿、矽卡岩型、玄武岩型及砂岩型等6种类型,但最重要的具工业意义的铜矿床是斑岩型及VMS型。蒙古国铜矿床主要形成于新元古代末期(埃迪卡拉纪)、晚泥盆世、晚石炭世和三叠纪-早侏罗世等4个时期。空间上,蒙古铜矿床可大体分为南、北2条成矿带,分别与古亚洲洋和蒙古-鄂霍茨克洋的演化有关。南Cu矿带自北而南可进一步划分为北、中、南3个成矿亚带,分别是泥盆纪VMS型Cu-Zn及多金属、晚石炭世斑岩型Cu-Au和晚泥盆世斑岩型Cu-Au-Mo等成矿亚带; 而北Cu矿带则可分为南、北2个亚带,且其铜矿化时代具有\"西早东晚\"的特征。蒙古斑岩铜矿床均形成于大洋板块俯冲背景下,属\"俯冲型\"斑岩铜矿,其中与古亚洲洋有关的南Cu矿带主要形成于俯冲带上方的洋内弧及弧后盆地环境,而与蒙古-鄂霍茨克洋俯冲有关的北Cu矿带则形成于陆缘弧环境。蒙古北Cu矿带受蒙古山弯构造的影响,向西不能延出国境,而其北、南亚带向东则分别延入俄罗斯外贝加尔和我国大兴安岭北部地区。对南Cu矿带而言,除了其北亚带(VMS型铜矿带)向西-西北延入我国阿尔山泰南部是可以确定外,其他2个亚带向两侧的延伸情况均不明朗,因此要理清它们的延伸,尤其是产有欧玉陶勒盖晚泥盆世超大型Cu-Au-Mo矿床的南亚带的区域延伸情况,尚需要系统的区域构造-地层-岩浆岩-矿床等对比研究工作。蒙古其他类型的铜矿,如矽卡岩型、与侵入岩有关热液型、玄武岩型、砂岩型及镁铁质层状杂岩型等矿床(点),目前均仅发现小型矿床或矿(化)点,其成矿及找矿潜力均有待进一步研究揭示。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135260887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geochemistry and geochronology of columbite-tantalite group minerals from the Chakabeishan pegmatite-type Li-Be deposit, North Qaidam Tectonic Belt 柴达木北缘构造带chakabe山伟晶岩型Li-Be矿床中铌钽矿群矿物地球化学及年代学

3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.11.12

SUN WenLi, ZHAO ZhiDan, MO XuanXue, DONG GuoChen, LI XiaoWei, YUAN WanMing, TANG Yan, WANG Tao

{"title":"Geochemistry and geochronology of columbite-tantalite group minerals from the Chakabeishan pegmatite-type Li-Be deposit, North Qaidam Tectonic Belt","authors":"SUN WenLi, ZHAO ZhiDan, MO XuanXue, DONG GuoChen, LI XiaoWei, YUAN WanMing, TANG Yan, WANG Tao","doi":"10.18654/1000-0569/2023.11.12","DOIUrl":"https://doi.org/10.18654/1000-0569/2023.11.12","url":null,"abstract":"茶卡北山锂铍矿床是柴北缘东段近年新发现的花岗伟晶岩型稀有金属矿床。为厘定成岩成矿时代、示踪演化过程和查明区域成矿事件相关性,本文系统开展了茶卡北山锂铍矿床19号铍矿化花岗伟晶岩脉铌钽铁矿(CGMs)内部结构、主量元素组成和U-Pb年代学研究。19号铍矿化花岗伟晶岩发育岩浆成因(CGMs-1)和交代成因(CGMs-2)两类铌钽铁矿。CGMs-1为具有振荡环带和均一不分带等简单内部结构的铌铁矿-铌锰矿。CGMs-2为具有交代镶边、交代蠕虫等复杂内部结构的铌铁矿-钽铁矿。CGMs-2是花岗伟晶岩演化最后阶段富Ta残余熔体交代CGMs-1产物,通常由富Nb贫Ta背散射亮度较暗(CGMs-2a)和富Ta贫Nb背散射亮度较亮(CGMs-2b)两个不规则部分组成。19号花岗伟晶岩岩浆成因和交代成因的铌钽铁矿U-Pb年龄在误差范围内一致(约229Ma)。多种矿物年龄数据联合约束限定茶卡北山锂铍矿床花岗伟晶岩群形成于240~229Ma,后于217~212Ma遭受亚固相线交代。茶卡北山锂铍矿床成岩成矿时代、锆石εHf(t)和tDM1年龄与北秦岭官坡-丹凤花岗伟晶岩型锂矿和甘孜-松潘-甜水海花岗伟晶岩锂矿不同,表明其代表青藏高原北缘一个新的伟晶岩锂成矿事件。","PeriodicalId":7075,"journal":{"name":"岩石学报","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135262011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late Paleozoic tectonic transition of the East Tianshan: Constraints from geochronology and geochemistry of the igneous rocks in the Hongshannan-Tianmudong area 东天山晚古生代构造转变:红山南-天木洞地区火成岩年代学和地球化学约束

IF 1.8 3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.09.08

X. Yuan, WU YanShuang, C. Wu, Yan-jun Chen

引用次数: 0

Progresses in experimental study of mantle melt connectivity 地幔熔体连通性实验研究进展

IF 1.8 3区地球科学

岩石学报 Pub Date : 2023-01-01 DOI: 10.18654/1000-0569/2023.01.04

Zhang Baohua, Liu Haibo, Zhao Chengcheng

引用次数: 0

岩石学报最新文献