滇西上芒岗金矿床地质地球化学特征

上芒岗金矿由下部原生卡林型和上部 红色粘土型金矿体所组成，赋矿地层为侏罗系勐戛组砂泥质岩、白云质灰岩和二叠系沙子坡组泥硅质灰岩、白云岩。北东向上芒岗断裂构造与不整合面和岩溶的复合控制了矿床和矿体。围岩蚀变以硅化（似碧玉岩化）、黄铁矿化、碳酸盐化和粘土化为主，并具有水平与垂向分带性。地球化学研究表明，蚀变与矿化岩石的稀土含量与未蚀变泥质灰岩基本一致，成矿溶液为富CI^－型和富SO4^2-型，爆裂温度为183－378℃，δ^34S=6.471‰-21.965‰，δ^18O=9.3‰-11.6‰，δD=-70‰--77‰，^206Pb/^204Pb=19.551-20.05,^207Pb/^204Pb=15.690-16.240,^208Pb/^204Pb=38.710=40.137。红色粘土型矿石的红土化作用只达到粘土阶段。     

澜沧老厂银多金属矿床火山岩地球化学特征及环境识别

本文通过对矿区火山岩的主元素、微量元素和稀土元素的地球化学特征分析，以及利用TiO2-K2O-P2O5、Th-Hf-Ta、Zr-Nb-Y三角图和不相容元素配分模式的环境识别图解，得出与前人不同的结论。认为澜沧老厂银多金属矿床火山岩为大陆板内碱性玄武岩系列，其产出的构造环境可能是东冈瓦纳大陆东北部边缘的碎片。     

浅成热液金矿研究综述

厘定了浅成热液金矿的概念，阐述了其成矿地球动力学环境，矿床本质特征及矿床的分类，指出了浅成熟液金矿研究中存问题及今后的研究取向。     

下庄铀成矿古水热系统排泄区（减压区）铀成矿作用研究

形成于古水热系统排泄区（减压区）的下庄花岗岩型铀矿床是地下热水与岩石相互作用的产物。矿物流体包裹体水文地球化学分析表明，成矿期铀成矿古热水溶液气体成分主要为CO2，水化学类型为HCO3－Ca.Na型，F－Ca型和HCO3.F－K型。地球化学模式和热力学计算证明，热水溶液中铀的存在形式为UO2（CO3）2^2-,UO2F3^-和UO2F4^2-。热水溶液深循环过程中CO2的加入可使溶液铀沉淀临界电位值（EhC,U)明显降低，从而保持水－铀比电位值（ΔEhW,U)为正值（ΔEhW,U=EhW-EhC,U)使铀在深部相对还原的条件下仍能稳定迁移。当富铀成矿热液进入减压排泄区时，由于溶液物理－化学条件的改变，发生CO2脱气作用和中和还原作用，导致ΔEhW,U小于零，使铀沉淀、富集，最终形成花岗岩型铀矿床。     

块状硫化物矿石中硫化物的压溶和增生及成矿意义——以加拿大西部矿床为例

加拿大西部块状硫化物矿石普遍地发生过硫化物的压溶和增生。增生作用根据增生体的成分可以分为同质增生和异质增生，根据动力环境可以分为静态增生和动态增生。三晶嵌接结构可以是静态增生的产物。压溶和增生是块状硫化物矿床成岩和变质过程中的重要作用。脉石矿物的压溶可使原生矿石就地加富，硫化物的压溶可使成矿物质发生再活化。增生可促进矿质沉淀。富含硫化物的地层之所以能成为地球化学障而有利于后期热液叠加和层控矿床的形成，硫化物晶芽的增生是一种重要机制。     

粤东嵩溪银锑矿床成矿构造及矿化富集规律浅析

论述了嵩溪银锑矿床的地质特征、矿脉形态特征及组构特征，通过分析得出矿床成矿断裂的产生有四个阶段，其中银、锑矿化主要与第二、三阶段有关。     

金属矿床有机烃气常见异常模式和成因机理研究

对十几个典型金属矿床进行试验研究后，初步总结了各类金属矿床上方，有机烃气和汞气的常见模式，即不对称对偶双峰式、对称对偶双峰式、顶端单峰（或峰丛）式和双峰、单峰混合式。并从烃气和汞的运移通道，成矿期的热差效应，金属硫化物的氧化作用，氧化还原条件等方面剖析了这些异常模式的成因机制。     

四川牦牛坪稀土矿床矿物流体包裹体研究

对矿物流体包裹体进行分析的结果表明，牦牛坪稀土矿床的矿物中存在4种类型包裹体：（1）液-所耵；（2）液-气-固相；（3）纯气相；（4）固相，矿物包裹体显微测温结果显示牦牛坪矿床成矿温度从423℃至122℃；成矿流体的盐度ω（NaCl)为11.46%-14.36%质量分数，包裹体的成分分析结果显示流体中富含CO2和其他挥发性组分，并富含大量的不同成分的矿物雏晶，根据矿床地质特征和矿物包裹体的研究结果，作者认为本矿床的成矿作用是由碳酸岩岩浆气液流体的沸腾、充填和交代过程而实现的。     

Physical structure features of the crust at southeast region of Tibetan Plateau

Chemical reactions of plagioclase, biotite and their single minerals, as well as a mineral mixture of (plagioclase+biotite+quartz), with KCl and (KCl+KHCO₃) solutions were carried out at 150–400°C and 50–80 MPa. Experiments show that alkaline fluid promotes plagioclase’s changing into potash feldspar, while acid fluid helps plagioclase, potash feldspar and biotite alteration form chlorite and sericite. After chemical reaction the acidity-alkalinity of solutions often changes reversely. It was observed that gold dissolved from the tube wall and recrystallized on the surfaces of biotite and pyrite. Therefore the transportation and enrichment of gold are related to the elementary effect of the fluid-mineral interfaces. Fe³⁺-Fe²⁺, as an oxidition-reduction agent, and volatile components Cl^- and CO₂ play important roles in the reaction process     

Fluid-rock history of granulite facies humite-marbles from Ambasamudram, southern India.

An extensive humite‐bearing marble horizon within a supracrustal sequence at Ambasamudram, southern India, was studied using petrological and stable isotopic techniques to define its metamorphic history and fluid characteristics. At peak metamorphic temperatures of 775±73°C, based on calcite‐graphite carbon isotope thermometry, the mineral assemblages suggest layer‐by‐layer control of fluid compositions. Clinohumite + calcite‐bearing assemblages suggest X_CO2 < 0.4 (at 700°C and 5 kbar), calcite + forsterite + K‐feldspar‐bearing assemblages suggest X_CO2>0.9 (at 790°C); and local wollastonite + scapolite + grossular‐bearing zones formed at X_CO2 of c. 0.3. Retrograde reaction textures such as scapolite + quartz symplectites after feldspar and calcite and replacement of dolomite + diopside or tremolite+dolomite after calcite+forsterite or calcite+clinohumite are indicative of retrogression under high X_CO2 conditions. Calcite preserves late Proterozoic carbon and oxygen isotopic signatures and the marble lacks evidence for extensive retrograde fluid infiltration, while during prograde metamorphism the possible infiltration of aqueous fluids did not produce significant isotopic resetting. Isotopic zonation of calcite and graphite grains was likely produced by localized CO₂ fluid infiltration during retrogression. Contrary to the widespread occurrence of humite‐marbles related to retrograde aqueous fluid infiltration, the Ambasamudram humite‐marbles record a prograde‐to‐peak metamorphic humite formation and retrogression under conditions of low X_H2O.