利用H2O-NaCl-CaCl2体系水盐化合物和冰的融化温度计算NaCl/（NaCl＋CaCl2）比值和盐度的方程

The composition of fluid inclusions in the H_2O-NaCl-CaCl_2 system has been generally graphically estimated using the melting temperatures of hydrohalite(T_(m-HH))and ice(T_(m-ice)).Here we present two equations that can be used to calculate the relative proportion of NaCl(i.e.,NaCl/[NaCl CaCl_2],or X_(NaCl))and the total salinity( i.e.,NaC1 CaC12,wt% )for fluid inclusions with ice as the last melting phase.X_(NaCl)can be calculated from T_(m-HH)using the following equation: y=(a bx)~(-1/c) where y is X_(NaCl),x is T_(m-HH),a=0.33124402,b=-0.031518028,and c=0.22932736.In the cases where only T_(m-ice)is measured and T_(m-HH)is not known,T_(m-ice)can be used as the maximum possible TIn.nil to calculate the maximum value of X_(NaCl)using the above equation.In these cases,the following equation can be used to calculate the maximum total salinity: y=(a bx cx~2)~(-1) where y is salinity,x is T_(m-HH),a=0.057184817,b=0.00078565757,and c=5.7262766E-6.Because the isothems in the field of ice are sub-parallel to the NaCl-CaCl_2 binary side in the H20-NaC1-CaC12 ternary system,the errors in salinity calculation introduced by the above approximation are small(less than 2 wt% ).A Windows program for calculation of X_(NsCl)and salinity is available at: http://uregina.ca/～chiguox.     

A New Method for Determining Fluid Compositions in the H20-NaCl-CaCl2 System with Cryogenic Raman Spectroscopy

Raman peaks of various hydrates in the H20-NaCl-CaCl2 system have been previously identified, but a quantitative relationship between the Raman peaks and XNaCl （i.e.,NaCl/ （NaCl＋CaCl2）） has not been established, mainly due to the difficulty to freeze the solutions. This problem was solved by adding alumina powder to the solutions to facilitate nucleation of crystals. Cryogenic （-185℃） Raman spectroscopic studies of alumina-spiced solutions indicate that XNaCl is linearly correlated with the total peak area fraction of hydrohalite. Capsules of solutions made from silica capillary were prepared to simulate fluid inclusions. Most of these artificial fluid inclusions could not be totally frozen even at temperatures as low as -185℃, and the total peak area fraction of hydrohalite is not correlated linearly with XNaCI. However, the degree of deviation （△XNaCl） from the linear correlation established earlier is related to the amount of residual solution, which is reflected by the ratio （r） of the baseline ＂bump＂ area, resulting from the interstitial unfrozen brine near 3435 cm^-1, and the total hydrate peak area between 3350 and 3600 cm^-1. A linear correlation between △XNaCl and r is established to estimate XNaCl from cryogenic Raman spectroscopic analysis for fluid inclusions.     

CH4-H2O体系流体包裹体拉曼光谱定量分析和计算方法

CH4—H2O体系流体包裹体研究对含油气盆地流体分析和成矿流体研究都有重要的意义。本文详细介绍了H2O、CH4和CH4—H2O体系的拉曼光谱特征及分子作用,分析了CH4—H2O体系热力学特征,同时对CH4—H2O体系流体包裹体拉曼光谱定量分析和计算的方法及步骤进行了叙述。利用人工合成流体包裹体建立甲烷浓度与拉曼特征峰面积比值之间的校正曲线是实现CH4—H2O体系流体包裹体定量分析的基础。盐度对包裹体定量分析的影响最为显著,在恒定甲烷浓度下,甲烷与水的拉曼峰面积比值随着盐度增加而减少。对于流体包裹体封闭体系,随温度升高,液相甲烷浓度增大。校正曲线必须包含对温度和盐度的校正。石英主矿物性质和方位对甲烷浓度定量分析的影响可以忽略。实验研究表明,原位拉曼光谱技术是准确获取流体包裹体中甲烷水合物生成条件的一种有效方法。因此,基于拉曼光谱分析和显微测温分析结果,采用热力学模型可以定量计算CH4—H2O体系流体包裹体的相关参数。     

低温原位拉曼光谱技术在流体包裹体研究中的应用

国外学者自80年代起利用原位低温拉曼测定技术在国际上首先开展地质领域感兴趣的几种盐水化合物研究以来,原位低温拉曼测定技术已经成功地用于对人工合成和自然界盐水体系流体包裹体的研究,在流体相中盐类的鉴定、低温相平衡及盐度研究等方面取得了显著成果。该方法是对传统的流体包裹体显微测温方法的重要补充,正在成为国际上流体包裹体研究的一个新的热点,在地质流体研究方面具有非常广阔的应用前景。     

流体包裹体成分测定的低温相变和显微拉曼光谱分析技术研究进展

论述了包裹体低温分析技术的原理以及进展。传统的流体包裹体低温分析技术是以显微冷冻测温测定无机盐体系为主,目前已发展到应用低温原位拉曼光谱技术对包裹体中的阳离子和阴离子进行定量-半定量分析。油气包裹体原位低温分析技术也取得了较大的突破,对不同成分油气包裹体低温下的相变过程取得了一定的认识,据此对油气包裹体进行分类,推测其主要成分,为油气包裹体计算提供基础参数。     

NaCl-H2O-CO2体系人工合成流体包裹体实验研究

NaCl- H2O-CO2体系流体是热液成矿系统中最常见的流体之一,针对该体系相关特征的研究对理解热液矿床的成矿机制和过程、成矿流体特征等具有重要的理论和实际意义.本文利用愈合人工水晶裂隙的技术,开展100 MPa、800℃条件下NaCl-H2 O-CO2体系流体的人工合成包裹体实验,并对其物理化学性质进行了初步探讨.通过对合成的包裹体进行岩相学观察、显微测温以及喇曼光谱分析,结果表明,在实验温压条件下合成的包裹体捕获了既定组成的流体;人工合成NaCl- H2O-CO2体系流体包裹体与天然流体包裹体具有相似的特征,可以作为天然包裹体的参照物应用于流体包裹体及地质流体的研究,特别是在评价CO2在热液矿床成矿过程中的作用方面,NaCl-H2O-CO2体系人工合成包裹体具有广阔的应用前景.     

Synthesis of Fluid Inclusion Reference Materials in the H2O–NaCl–CH4 System

In this study, we detail procedures to synthesise inclusions of fluids of known composition under diagenetic conditions – low temperatures (50–180 °C) and pressures (2–25 MPa) – hosted by quartz. Pre‐existing microcavities in polished quartz chips were used, decrepitated and rinsed before being healed in an autoclave. Each synthesis required around 4 weeks. A range of biphase liquid–vapour inclusions in the H₂O–CH₄–NaCl system, similar to natural ones, were synthesised in quartz, varying the content of all three components. The quartz chips were checked before and after synthesis by optical microscopy, microthermometry and Raman spectroscopy. The method was used to build a series of calibration curves relating methane‐to‐water count ratios to the methane content of aqueous fluid inclusions. Good correlation was obtained between Raman band area ratios and the expected CH₄ solubilities from equations of state. The chosen procedure's main advantages, compared with other published methods, are as follows: quicker healing of the microfractures at lower temperatures, larger inclusions, simple quartz sample preparation, control of fluid inclusion composition and the use of commercial reactors. Such reference material inclusions allow the calibration of Raman microspectrometers with the objective of PTX reconstruction of palaeofluid migration in petroleum reservoirs.     

Combined microthermometric and Raman spectroscopic technique to determine the salinity of H2O-CO2-NaCl fluid inclusions based on clathrate melting

Fluid inclusions approximated by the system H₂O-CO₂-NaCl are common in many geologic environments. In order to apply microthermometric data from these inclusions to infer P-T (pressure-temperature) trapping conditions, the composition of the inclusions, including the salinity, must be known. Normally, salinities of aqueous inclusions are determined from ice-melting temperatures obtained during microthermometry. However, when CO₂-bearing aqueous fluid inclusions are cooled they often form a hydrate that incorporates H₂O into the structure, and salinities estimated from ice-melting temperatures are therefore higher than the actual salinity. A technique that combines data from Raman spectroscopic and microthermometric analyses of individual inclusions was developed to determine the salinity of CO₂-bearing aqueous inclusions based on measured clathrate melting temperatures and CO₂ pressures obtained from Raman analyses. In this study, the pressure within inclusions was determined using Raman spectroscopy based on the splitting of the Fermi diad of CO₂, measured at the clathrate melting temperature. The CO₂ densities (and pressures) predicted by the equation developed in this study are in relatively good agreement with previously published equations, except for very low densities and correspondingly low pressures. The combined Raman spectroscopy - microthermometry technique thus provides both the temperature and the pressure in the inclusion at clathrate melting. For inclusions in which the clathrate melts in the presence of CO₂ liquid, the salinity can be determined with a precision of a few tenths of a wt% NaCl, whereas for inclusions in which clathrate melts in the presence of CO₂ vapor the salinity error may be a few wt% NaCl. Applying the method to synthetic fluid inclusions with known salinity suggests that the technique is valid for determining salinity of H₂O-CO₂-NaCl fluid inclusions in which clathrate melts in the presence of liquid CO₂ only or vapor CO₂ only.     

原位低温拉曼光谱技术在人工合成CaCl2-H2O和MgCl2-H2O体系流体包裹体分析中的应用Ⅱ:低温下流体包裹体相变行为的研究

本文利用低温原位拉曼技术,对CaCl2-H2O体系和MgCl2-H20体系人工合成流体包裹体进行了研究.结果表明:对于盐浓度不同的溶液而言,可采用不同的冷冻方式有效采集低温拉曼光谱;通过系统采集不同温度下的拉曼光谱,可以直接准确地测定包裹体中流体的成分和低温相变过程.人工合成包裹体原位低温拉曼光谱的研究,为将该技术应用于天然包裹体分研究奠定了理论基础,可以预见,该技术必将在流体包裹体研究领域发挥其它方法不可替代的重要作用.     

西藏甲玛铜多金属矿床成因研究——来自流体包裹体的证据

甲玛铜多金属矿床位于西藏冈底斯斑岩铜矿带东段,是近年来勘探发现的超大型斑岩-矽卡岩型铜多金属矿床。通过冷热台显微观察与测温、扫描电镜、激光拉曼探针测试,对甲玛矿床各成矿阶段典型矿物的流体包裹体研究表明,成矿流体富含挥发分,临界相均一的流体来自岩浆超临界流体出溶,主成矿阶段具有沸腾包裹体组合特征,有机质包裹体荧光效应显著。显微测温结果显示,岩浆-热液阶段斑岩中石英斑晶的流体包裹体均一温度范围为250～540℃,含石盐子晶高盐度包裹体盐度范围为35～61(wt%)NaCl.eq,中等盐度的临界均一的气液包裹体盐度范围为3～29(wt%)NaCl.eq,岩浆期后热液阶段斑岩、角岩中石英脉的流体包裹体均一温度范围为210～410℃,盐度范围为33～41(wt%)NaCl.eq,与其不混溶共生的中低盐度气液两相流体包裹体盐度范围为5～25(wt%)NaCl.eq。矽卡岩阶段矿物均一温度范围为130～360℃,盐度范围为3～41(wt%)NaCl.eq,从岩浆热液过渡阶段到石英-硫化物阶段均一温度与盐度呈阶梯式降低趋势。斑岩体石英的流体包裹体中含有较多黄铜矿子矿物,岩浆结晶分异过程中已经具成矿元素的富集。激光拉曼探针测试结果显示,成矿早期至主成矿期矿物流体包裹体气相成分主要为CO2、CH4和N2,各阶段矿物流体包裹体气相成分具有继承性。成矿流体为高温度高盐度,富含CO2、CH4的流体。成矿流体主要源于岩浆,后期混有大气降水。当岩浆热液上升时因压力的突然释放造成高温含矿热流体发生减压沸腾,CO2和CH4等气体大量逃逸,导致成矿物质快速沉淀。矿床在成因上与岩浆-热液成矿作用密切相关。     

内蒙古柳坝沟金矿床流体包裹体研究

对柳坝沟金矿床的包裹体进行系统的岩相学、显微测温和激光拉曼光谱研究,结果表明:包裹体的主要类型有富液包裹体、富气包裹体、CO2-H2O和含子矿物多相包裹体。流体包裹体液相成分为水,气相成分主要为CO2及H2O,并含有少量或微量的N2、H2S、CH4等挥发份。成矿流体属中高温、中低盐度、中等密度的NaCl-H2O-CO2体系。矿床形成于中深成矿环境。矿床的成矿作用是一个温度退缩和盐度降低的过程,成矿过程中发生过多次流体沸腾作用,流体的沸腾和CO2流体在Au成矿过程中发挥着重要作用。     

Determination of Salinity in Fluid Inclusions with Laser Raman Spectroscopy Technique

ＩＮＴＲＯＤＵＣＴＩＯＮＬａｓｅｒＲａｍａｎｍｉｃｒｏｐｒｏｂｅｈａｓｂｅｅｎｆｏｕｎｄｉｎｍａｎｙｇｅｏｌｏｇｉｃａｌａｐｐｌｉｃａｔｉｏｎｓ (Ｓｈｏｖａｌｅｔａｌ.,1995 ;ＭｃＭｉｌｌａｎａｎｄＨｏｆｍｅｉｓｔｅｒ,1988;ＭｃＭｉｌｌａｎ ,1984;Ｄｕｂｅｓｓｙｅｔａｌ.,1982 ;Ｇｒｉｆｆｉｔｈ ,1975 )ａｎｄａｓａｎｏｎ ｄｅｓｔｒｕｃｔｉｖｅａｎｄｉｎｓｉｔｕｔｅｃｈｎｉｑｕｅ,ｉｔｈａｓｈａｄａｔｒｅｍｅｎｄｏｕｓｉｍｐａｃｔｏｎｄｅｖｅｌｏｐｍｅｎｔｏｆｆｌｕｉｄｉｎｃｌｕｓｉｏｎｃｏｍｐｏｓｉ…     

Fluid inclusion characteristics of intrusion-related gold mineralization, Tombstone–Tungsten magmatic belt, Yukon Territory, Canada

Intrusion-hosted, low sulfide, sheeted vein systems are common within many plutons and stocks of the middle Cretaceous Tombstone-Tungsten magmatic belt, Yukon Territory, and host significant gold mineralization. Fluid inclusion characteristics of five such systems, namely Emerald Lake, Dublin Gulch, Scheelite Dome, Mike Lake, and MacTung, constrain the vein-forming fluid composition, formation temperatures and pressures, hydrothermal fluid processes, and potential fluid sources. The veins contain a wide range of fluid inclusion types. Ubiquitous type 1A and 1B inclusions are low salinity (1A: XNaCl<0.02; 1B: XNaCl<0.03), CO₂-rich (1A: XCO₂=0.18-1.00; 1B: XCO₂=0.02-0.33). Laser Raman studies indicate that type 1A and 1B inclusions commonly contain minor CH₄ (XCH₄<0.09) and N₂ (XN₂<0.12). Type 2 inclusions are H₂O-rich (XH₂O=0.94-0.99), of low to moderate salinity (XNaCl=0.01-0.06), and were common at Emerald Lake and Dublin Gulch, in addition to localized type 3A halite-bearing inclusions (XNaCl=0.12-0.16). Both inclusion types post-dated the CO₂-rich inclusions. Sheeted veins in the Mike Lake pluton contained coexisting type 1A and 3A and 3B (halite + sylvite) inclusions. Type 1A inclusions in all studied systems homogenized between 208 and 362 °C, type 1B ranged between 205 and 329 °C, and type 2 between 154 and 261 °C. Type 3A and 3B inclusions homogenized between 217 and 355 °C. A predominantly magmatic source for both CO₂-rich and saline H₂O-rich fluids is favored, with variations in trapping pressure (<1 kbar at Mike Lake, >1 kbar at Emerald Lake and Dublin Gulch, and >2 kbar at MacTung and Scheelite Dome) that potentially control fluid composition and evolution. A variety of fluid processes may have been responsible for gold precipitation including immiscibility and/or release of an evolving magmatic fluid.     

内蒙古乌日尼图钨钼矿床成矿流体特征及地质意义

乌日尼图钨钼矿位于内蒙古苏尼特左旗境内,是近几年该区新发现的较大规模的钨钼矿床.钨钼矿体主要产于燕山期花岗岩体的内外接触带附近,以细脉状矿化类型为主.该矿床中的流体包裹体主要发育气液两相、富气相、富液相和纯液相包裹体等类型.包裹体均一温度为130.0~371.7 ℃(峰值为160.0~260.0 ℃),盐度为0.2%~15.9% NaCl eqv(峰值为0.2%~12.5% NaCl eqv),属于中低温、中低盐度钨钼矿床.激光拉曼和群体包裹体成分分析结果表明,流体体系气相成分以H₂O、CO₂为主,其次为N₂、O₂以及少量CO、CH₄、C₂H₂、C₂H₄和C₂H₆等; 液相成分以Ca2+、Na+、SO₄2-、Cl-为主,其次为K+、F-、NO₃-、Mg2+以及少量Br-和Li+.成矿流体为H₂O-NaCl-CO₂体系.流体包裹体氢氧同位素分析表明,成矿流体的δ18O_水的含量范围为-2.11%~-0.11%,δD_水的含量范围为-85%~-108%,成矿流体为岩浆水与大气降水的混合物.结合矿床地质和成矿流体特征,认为该矿床为与燕山期岩浆活动有关的中低温热液石英脉型钨钼矿床,成矿物质以深源为主.      

激光拉曼光谱法在单个流体包裹体研究中的应用进展

激光拉曼光谱法以其非破坏性、高灵敏度和高分辨率等特性,一直以来都是研究流体包裹体的重要方法之一。近年来,围绕激光拉曼光谱在流体包裹体中的应用而展开的研究主要集中在半定量-定量测试方面,即在准确定性的基础上,采用高斯-洛仑兹去卷积分峰、低温原位等定量方法获取流体包裹体的成分和含量,从而克服了激光拉曼光谱法应用于溶液中阳离子的定量分析的灵敏度、准确度较低的问题,不仅能获得流体包裹体中一些常温下不具拉曼活性的盐类物质拉曼特征峰信息,还能根据特征峰与浓度、内压之间的线性关系,进一步对盐度和压力等性质进行测定,从而拓展了激光拉曼光谱法在流体包裹体中的应用范围。本文对激光拉曼光谱法应用于分析流体包裹体成分、盐度、同位素和压力所取得的最新进展进行了评述,并认为随着分析测试技术的不断进步,激光拉曼光谱法未来的分析方向也将继续围绕多元复杂体系及其定量方面的研究展开。     

Fluid evolution in the nepheline syenites of the Ditrău Alkaline Massif, Transylvania, Romania

The Ditrău Alkaline Massif is an intrusion into the Bucovina nappe system that is part of the Mesozoic crystalline zone located in Transylvania, Romania, in the Eastern Carpathians. Nepheline syenites are the most abundant rocks in the central and eastern part of the Massif, and represent the last major intrusion of the complex. Fluid inclusions in nepheline, aegirine and albite were trapped at magmatic conditions on or below the H₂O-saturated nepheline syenite solidus at about 400–600 °C and 2.5–5 kbars. Early nepheline, and to a lesser extent albite, were altered by highly saline fluids to produce cancrinite, sodalite and analcime, during this process cancrinite also trapped fluid inclusions. The fluids, in most cases, can be modeled by the H₂O–NaCl system with varying salinity; however inclusions with more complex fluid composition (containing K, Ca, CO₃, etc., in addition to NaCl) are common. Raman spectroscopic analyses of daughter minerals confirm the presence of alkali-carbonate fluids in some of the earliest inclusions in nepheline, aegirine and albite.

During crystallization, the melts exsolved a high salinity, carbonate-rich magmatic fluid that evolved to lower salinity as crystallization progressed. Phases that occur early in the paragenesis contain high-salinity inclusions while late phases contain low-salinity inclusions. The salinity trend is consistent with experimental data for the partitioning of chlorine between silicic melt and exsolved aqueous fluid at about 2.0 kbars. The activity of water (a_H2O) in the melt increases during crystallization, resulting in the formation of hydrous phases during late-stage crystallization of the nepheline syenites.     

上扬子地块东缘凹子岗锌矿床成矿流体特征

凹子岗锌矿床位于上扬子地块东缘,该矿床经历了两个成矿期:沉积成岩期和热液期,形成两种不同岩相学特征的闪锌矿。流体包裹体岩相学研究显示,存在盐水包裹体(W型)、烃类包裹体(G型)和含石盐子矿物多相包裹体(S型)。有机流体活动与成矿存在耦合关系,其中烃类包裹体(G型)赋存于白云石和自形粗粒闪锌矿中,具有黄色荧光效应,激光拉曼测试显示其成分为沥青质、CH_4、C_3H_8和H_2O;此外,沥青与闪锌矿密切共生。显微测温结果显示热液期流体包裹体均一温度集中于160~180℃,盐度集中于8%~14%NaCl_(eqv),部分可达30%NaCl_(eqv)左右。成矿流体除含有机质外,还含有NaCl、KCl、CaCl_2、MgCl_2、H_2O,为多元共存的流体体系,成矿压力为22~84 MPa。     

江西盘古山石英脉型钨矿床流体包裹体研究

采用"流体包裹体组合"(FIA)的方法,在详细的岩相学观察的基础上,对盘古山钨矿床主要矿化阶段中早阶段的辉铋矿-黑钨矿-石英脉和晚阶段的(辉铋矿)-黑钨矿-石英脉石英中的流体包裹体进行了显微测温和拉曼探针的分析。该矿床主要矿化阶段含矿石英脉中包裹体主要包括H2O-NaCl型包裹体、H2O-NaCl-CO2型包裹体和少量的CO2型包裹体,富含CO2组分是盘古山钨矿成矿流体的明显特征。实验结果表明,矿床中主要矿化阶段石英脉中两相的H2O-NaCl型包裹体与H2O-NaCl-CO2型包裹体主要均一温度范围较为一致而前者盐度相对较高。辉铋矿-黑钨矿-石英脉中的H2O-NaCl型包裹体的均一温度明显高于(辉铋矿)-黑钨矿-石英脉中的H2O-NaCl型包裹体,但两者的盐度相差不大,从辉铋矿-黑钨矿-石英脉到(辉铋矿)-黑钨矿-石英脉,H2O-NaCl-CO2型包裹体数量减少,CO2型包裹体数量增多。对各类包裹体的激光拉曼探针测试表明,辉铋矿-黑钨矿-石英脉中和(辉铋矿)-黑钨矿-石英脉中的包裹体的组分相近,除水和CO2外,还含有少量的CH4和N2。盘古山钨矿的流体包裹体特征表明,以CO2逸失为特征的流体不混溶作用是矿床金属沉淀的主要机制。     

山西中条山铜矿峪铜矿流体演化特征

铜矿峪铜矿大地构造位置位于华北克拉通中部造山带南部,主容矿围岩为花岗闪长斑岩、二长花岗岩及变质基性火山岩。对不同阶段石英流体包裹体进行了包裹体岩相学、显微测温学和激光拉曼显微探针研究。结果表明,成矿流体包裹体可分为气液两相包裹体、含多子晶包裹体、含石盐子晶包裹体、含CO2 包裹体及纯CO2 包裹体。其中早阶段以富含多子晶包裹体( 均一温度为436. 2 ℃ ～ ＞ 550 ℃,盐度( w ( NaCl) ) 为49. 34% ～ ＞ 62%) 和含石盐子晶包裹体( 均一温度为345. 6 ℃ ～ ＞ 550 ℃,盐度( w ( NaCl) ) 为29. 72% ～ ＞ 62%) 为主。主成矿阶段主要由含石盐子晶包裹体( 均一温度为169. 1 ℃ ～ 324. 9 ℃,盐度( w ( NaCl) ) 为30. 47% ～ 39. 75%) 、气液两相包裹体( 均一温度介于159. 9 ℃ ～ 242. 9 ℃,盐度( w ( NaCl) ) 为1. 56% ～ 22. 31%) 组成并发现少量含CO2 包裹体 ( 均一温度为259. 7 ℃ ～ 320. 5 ℃,盐度( w ( NaCl) ) 为8. 93% ～ 13. 16%) 和纯CO2 包裹体( CO2 均一温度为24. 3 ℃ ～ 27. 22 ℃) 。晚成矿阶段仅发育气液两相包裹体( 均一温度为126. 9 ℃ ～ 212. 3 ℃,盐度( w ( NaCl) ) 为1. 56% ～ 7. 44 %) 。激光拉曼光谱分析包裹体气相成分主要为H2O、CO2、 HF 组成,晚期为CO2、N2。包裹体中普遍存在CO2。早阶段流体应为高温高盐高氧逸度NaCl － H2O － CO2 体系。主成矿阶段含气液两相包裹体与富CO2 相包裹体共存,表明流体发生了不混溶或沸腾现象。成矿晚阶段低温低盐度气液两相包裹体可能来源于大气降水。分析认为,铜矿峪铜矿成因类型属斑岩型。     

拉曼光谱在分析气液包裹体气体成分中的应用

简要介绍了拉曼光谱的原理、激光拉曼探针的基本组成部份及使用激光拉曼探针分析气液包裹体中气体成分的方法,指出了在分析过程中应注意的问题,以及目前国际上在解决这些问题中所处的现状。