南京九华山铜矿伴生金的赋存状态及分布规律

九华山铜矿床中伴生金已具综合利用价值。金以矿物态为主,金矿物主要为银金矿、含银自然金。金矿物粒度较细,大于２００目者占２４．３４％,金矿物主要嵌布于黄铜矿粒间或裂隙中。金的理想回收率为６６．３０％,空间分布上,沿矿体走向金西低东高,倾向金北高南低,深度金随深度增加而增加。     

乌奴格吐山斑岩铜钼矿床中金属矿物的特征

乌奴格吐山矿床是一个大型斑岩铜钼矿床。金属矿物中以贯通性矿物黄铁矿含量最多。钼、铜、铅锌三个主要成矿阶段，黄铁矿的平均温度分别为３３１℃、２２８℃、＜２００℃。黄铁矿中Ｃｏ、Ｎｉ、Ａｓ等微量元素特征为成矿物质来源提供了重要信息。辉钼矿是唯一重要的钼矿物，主要赋存在石英－钾长石化带，以２Ｈ型为主。铜矿物有黄铜矿、锌砷黝铜矿、斑铜矿等，以黄铜矿为主，主要赋存在石英－绢云母－水白云母化带。不同世代黄铜矿微量元素的差异反映了成矿溶液的变化。方铅矿、闪锌矿主要赋存于石英－伊利石－水白云母化带。闪锌矿贫铁（ＸＦｅＳ＝４ｍｏｌ％—８ｍｏｌ％），方铅矿含Ａｇ（０．０１％—０．３５％）。     

勘查地球化学找矿中重要指示元素的野外快速分析法（二）银的分析方法

发展了一种可在野外快速测定０．０１０—５０μｇ／ｇ银量的新方法。此法由两个各自独立而又配套的部分组成。一是直接测定０．２５—５０μｇ／ｇ银量的Ａｇ－ＴＭＫ－ＳＤＳ三元络合物光导比色测定法；二是测定０．０１０—０．２５μｇ／ｇ银量的巯基棉分离富集微珠析出比色法。可在同一份试液中依次完成。前者检出限为０．００６μｇ／ｍｌ（Ｋ＝３）；测定铜、铅和锌矿石标样ＧＳＯ－Ｃｕ－１（含银３．８７μｇ／ｇ）、ＧＳＯ－Ｐｈ－１（含银１４．７μｇ／ｇ）和ＧＳＯ－Ｚｎ－１（含银１３．５μｇ／ｇ）中的银，ＲＤＳ（ｎ＝１１）分别为１．６％、３．７％和３．４％；后法可检出５ｎｇ／ｇ银；测定地球化学标样ＧＳＤ－３（含银０．５９μｇ／ｇ）中的银，ＲＳＤ（ｎ＝１１）为６．ｔ％。方法较为简便、快速、准确和灵敏。用光导比色计测定，结果准确度、精度均有较大改善，且与室内原子吸收法相当。故所定方法具有广阔的应用前景。     

河北牛圈热泉型银（金）矿床成因

牛圈银（金）矿床是冀北地区近几年来新发现的重要银矿床之一。本文从硅质角砾岩成因，成矿的阶段划分，成矿物理化学条件，矿物包裹体等方面入手探讨了该矿床成因并提出了成矿模式，该矿床成矿温度稍高（２２０－３５０℃），成矿压力很低（小于２６０×１０＾５Ｐａ）形成深度为０．４２－０．８６ｋｍ亚地表环境，成矿流体以低盐度（小于３．３５ｗｔ％ＮａＣｌ）富Ｋ＾＋，Ｃｌ＾－，Ｆ＾－，ＳＯ＾２－４，贫Ｎａ＾＋，Ｃａ＾２     

桂东北铅锌矿床银的富集规律

作者对桂东北地区铅锌矿床中银的产出特征和富集规律进行了阐述。银主要以首次发现的含银硫盐矿物（深红银矿、银黝铜矿和含银锌黝铜矿等）产出，其次呈杂质元素分散在金属硫化物中，银的含量按方铅矿、黄铜矿、闪锌矿、黄铁矿的顺序依次降低，矿体从上向下具Ｃｕ、Ｐｂ（Ａｇ），Ｚｎ→Ｐｂ，Ｚｎ→Ｚｎ的垂向变化规律，银主要富集于上部，并与方铅矿、黄铜矿紧密伴生。     

麻栗坡三保银—锰矿床氧化矿石的选冶性能及其矿床类型

麻栗坡三保及国内２０余外银－锰矿床,绝大多数只是氧化矿石才有工业价值。其共同特征是银锰（铁）氧化物吸附,浮选难以回收,常采用强磁选提高其品位,达到冶炼高炉富锰渣的要求,并综合回收含银粗铅、生铁及氧化锌粉。基于此特点,建议在我国银矿床分类上,将其单独列出一类,即银－锰型银矿床。     

广西凤凰山银锰矿床S—Fe—Cu—Ag—Sn系列矿物标型特征

文章通过广西凤凰山银锰矿床中的Ｓ－Ｆｅ－Ｃｕ－Ａｇ－Ｓｎ系列矿物黄锡矿，含银黄锡矿，银黄锡矿，硫银锡矿的化学成分标型，标型矿物组合特征的研究，为该矿床的成因，深部隐伏银矿化，矿区及其外围的找矿提供了一定的信息。     

从周边国家银矿床地质特征探讨中国银矿找矿前景

中国周边国家银矿床主要分布于原苏联、蒙古、日本、朝鲜、菲律宾、缅甸、印尼等国家。有５种类型银矿床可与中国相应地区银（含银）矿床进行类比，即（１）大陆边缘带陆相火山岩型（金－）银（－多金属）矿床；（２）火山（一次火山）热液型含银黄铁矿型铜或多金属矿床；（３）斑岩型银或含银金－铜（铅－锌－锡）矿床；（４）变质热液交代型金－银矿床或银－铅－锌矿床；（５）矽卡岩型含银磁铁矿或多金属矿床；并提出我国相应地区     

澜沧铅锌银铜矿床矿物包裹体及成矿物化条件的研究

矿物流体包裹体的研究表明，澜沧铅锌银铜矿床成矿流体的温度为１６０￣３５０℃，压力６９０００ｋＰａ，盐度４．６￣１７．０ＮａＣｌｗｔ％，密度０．８５￣１．０ｇ／ｃｍ＾３，ｆｓ２１０＾－９．３￣１０＾－１１．０Ｐａ，ｆｏ２１０＾－３５￣１０＾－３７Ｐａ，Ｐｈ值５．１￣５．７。成矿元素主要以氯化物络合物的形式迁移、温度降低，ｆｓ２和ｐＨ值的升高是引起矿物质沉淀的主要因素。     

世界银矿资源及主要银矿床特征

世界银矿资源主要分布在苏联、墨西哥、加拿大、美国、澳大利亚和秘鲁等国,重要银矿床类型是与中一新生代火山岩、次火山岩有关的浅成热液脉状银矿床,斑岩银矿床,火山岩中的含银块状硫化物矿床,沉积型银多金属矿床,碳酸盐岩中的沉积一改造型含银多金属矿床.     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)     

HISTORICAL GEOLOGY & STRATIGRAPHY

正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin