根据红外光谱分析和分子轨道计算结构建立的钠长石熔体中水溶解机…

Ｈ２Ｏ－和Ｄ２Ｏ－ＮａＡｌＳｉ３Ｏ２玻璃的红外光谱与无水钠长石玻璃的红外光谱之间有两大差别：一量有许多由数个Ｏ－Ｈ伸缩振动引起的高于３０００ｃｍ＾－１的谱带出现，二是在含水玻璃红外光谱中的９００ｃｍ＾－１附近出现一个谱肩。未发现因Ｄ－Ｈ置换而引起的９００ｃｍ＾－１谱肩的频率偏移。根据我们的红外光谱和分子轨道计算结果，以及以前的ＮＭＲ和喇曼光谱，我们得出结论：Ｈ２Ｏ－钠长石玻璃的振动光谱中９００ｃｍ     

石英和碳酸钙表面位的FDIR谱学研究

本文采用漫反射红外光谱（ＦＤＩＲ）方法对石英、方解石、合成碳酸钙和孔雀石等矿物表面位（基团）作了研究。随着溶液ｐＨ值的升高,由于表面基团间氢键的影响,石英表面位〉Ｓｉ－Ｏ和〉Ｓｉ－Ｏ－Ｓｉ的吸收峰向高频方向漂移,即〉Ｓｉ－Ｏ非对称伸缩振动吸收峰由１０３６ｃｍ＾－１→１０４５ｃｍ＾－１→１０４７ｃｍ＾－１,〉Ｓｉ－Ｏ－Ｓｉ对称伸缩振动吸收峰由７７７ｃｍ＾－１→７８２ｃｍ＾－１→７８８ｃｍ＾－１,而〈     

变生褐帘石的红外光谱研究

研究了不同程度变生褐帘石及其热处理样品的红外光谱变化特征，提出其变生的红外光谱定量标志－变生度Ｍ＝１／５（６－Ｎ）（Ｎ为７５０－２００Ｃｍ＾－１范围的谱带数）。分析了变生作用中褐帘石晶格内离子基团的变化，结合晶体结构分析，提出褐帘石红外光谱中４５０、５１０ｃｍ＾－１附近的两个谱带分别系结构内孤立硅氧四面体ＳｉＯ４及群体硅氧四面体Ｓｉ２Ｏ７的弯曲振动谱带。     

热液体系中Si的络合作用

在不同温度、ＰＨ和硅浓度条件下,实验标定了Ａｕ－ＳｉＯ以及Ｓｎ－ＳｉＯ２之间的络合反应：Ａｕ＾＋＋Ｈ３ＳｉＯ４＾－之间的络合反应：Ａｕ＾＋＋Ｈ４ＳｉＯ＝ＡｕＨ３ＳｉＯ４ ｌｇＫ＝－１．６５４３６＋９６１１．２１／Ｔ;Ｓｎ＾４＋＋４Ｈ３ＳｉＯ４＾－＝Ｓｎ（Ｈ３ＳｉＯ４）４;ｌｇＫ２００ｃ＝４２．７３。通过与Ａｕ－Ｃｌ、Ａｕ－ＨＳ以及Ｓｎ－ＯＨ络合物迁移能力的比较,表明在具地质意义的Ｐ睡ＥＨ条件下,Ａ     

锆石的振动谱及其简正坐标分析

本文采用Ｕ－Ｂ力场在位置群近似时对锆石中ＳｉＯ＾４－４离子的内振动进行了简正坐标分析，振动频率的计算值与观察值吻合很好。根据简正坐标分析确定的力常数值为Ｋｒ＝４００，Ｈ１＝４４，Ｈ２＝６０，Ｆ＝２５Ｎ．ｍ＾－１。     

黄铁矿的中远红外谱及其对含金性的评价

针对黄铁矿的具体情况，笔者采用中─远红外幅射以及透射吸收谱与反射吸收谱相比较的方法，对其红外光谱特征和含金性评价进行了系统全面的研究，确定了黄铁矿含金性的红外光谱评价准则是：ｖ１、ｖ２、ｖ３吸收带的频率分别低于４１５ｃｍ－１、３４７ｃｍ－１、２８７ｃｍ－１，Ｔｏｖ１－Ｔｖ１值低于３０，Ｔｏｖ２—Ｔｖ２值低于５时为富金；相反的情况为贫金或无金。在样品物质浓度（Ｃ）相同的条件下，黄铁矿特征吸收带的光密度（Ｄ）值随其含金性提高而变小。     

海泡石粘土矿的应用

海泡石粘土矿的应用史玉芳姜燕冬（中国地质大学测试中心，武汉４３００７４）关键词海泡石结构性质用途海泡石属于海泡石－坡缕石粘土矿物族，是一种纤维状含水镁硅酸盐矿物，其典型的化学式为：Ｍｇ８Ｓｉ１２Ｏ３０（ＯＨ）４（ＯＨ２）４８Ｈ２Ｏ，但其化学成分变化较...     

云南乐红铅锌矿床氧化带中异极矿的矿物学特征及其意义

云南乐红铅锌矿床氧化带十分发育,呈细脉或葡萄状产于氧化矿石中的白色矿物曾被认为是菱锌矿,笔者对该矿物作了物理、光学性质,化学发,Ｘ射线衍射,红外光谱及失重和差热分析研究,确定其为异极矿。其晶体化学式为Ｚｎ３．９８（Ｓｉ２．０１Ａｌ０．０１）２．０２Ｏ７（ＯＨ）２．０３．０．８８Ｈ２Ｏ晶胞参数ａ＝０．８３８０（４）ｎｍ,ｂ＝１．０７１８（７）ｎｍ,ｃ＝０．５１２５（６）ｎｍ。对异极矿矿物学特征的全面     

电气石中水的振动谱学研究及其意义

利用偏振喇曼光谱（ＰＲＳ）和傅里叶变换红外光谱（ＦＴＩＲ）研究了三种不同成因电气石单晶的振动谱学特征。ＰＲＳ研究表明电气石结构中三个阴离子团（即［Ｓｉ６Ｏ１８］＾１２－、［ＢＯ３］＾３－、［ＯＨ］＾－）的喇曼谱在平行ｃ轴方向（／／ＮＥ）比垂直ｃ轴方向（／／ＮＯ）敏锐，而且［ＯＨ］＾－喇曼光谱只在平行ｃ轴的ＰＲＳ中才观察到。不同成因电气石中［ＯＨ］＾－占位不同。结合ＦＴＩＲ研究发现在伟晶型和热液型的     

冀东高级变质岩石的流体包裹体研究

冀东高级变质的石榴石斜长片麻岩、含或不含石榴石的角闪二辉斜长片麻岩、紫苏花岗岩、斜长角门岩等岩石中的流体包裹体主要有４类，按形成的先后顺序依次为：（１）Ｈ２Ｏ和ＣＯ２两液相包裹体，ＣＯ２的部分均一温度是－１２℃，密度１．０４ｇ／ｃｍ３，Ｈ２Ｏ含量２１％～３９％（ｍｏｌｅ％），ＣＯ２含量５０％～７１％（ｍｏｌｅ％）；（２）ＣＯ２液相包裹体，冰点温度－５６℃～－６１℃，均一温度－７．４℃～－３５．１℃，ＣＯ２密度约为１．０５ｇ／ｃｍ３，ＣＯ２含量８２．１％～９８．４％（ｍｏｌｅ％），还有少量的ＣＨ４、Ｎ２和Ｈ２等组分；（３）Ｈ２Ｏ和ＣＯ２多相包裹体，ＣＯ２的部分均一温度７℃～２８℃，ＣＯ２密度为０．６４～０．９３ｇ／ｃｍ３，气相组分以ＣＯ２、ＣＨ４和ＣＯ为主，液相成分主要是Ｈ２Ｏ和ＣＯ２；（４）多世代盐水溶液包裹体，冰点温度－０．５℃～－２０℃，盐度０．８７％～２２．８％（ｗｔ％），盐水密度０．７～１．０５ｇ／ｃｍ３，均一温度在１５０℃～２００℃和约３００℃，存在两个峰值。不同世代的流体包裹体记录了等密度降温的Ｐ－Ｔ路径。包裹体反映的变质作用早期降温过程流体的Ｈ２Ｏ／Ｈ２Ｏ＋ＣＯ２（ｍｏｌｅ）比值降低，晚期升高     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.     

PALEONTOLOGY

正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)     

GEOCHEMICAL EXPLORATION

正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)     

MICROPALAEONTOLOGY

正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)     

PETROLOGY

正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,     

ENVIRONMENTAL GEOLOGY

正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an     

PROSPECTING EXPLORATION

正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of     

OCEANOGRAPHY & MARINE GEOLOGY

正20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology Quaternary Geology,ISSN0256-1492,CN37     

ENVIRONMENTAL GEOLOGY

正20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.)