Fused-silica capillary capsules (FSCCs) as reference synthetic aqueous fluid inclusions to determine chlorinity by Raman spectroscopy

Caumon, Marie-Camille; Dubessy, Jean; Robert, Pascal; Tarantola, Αlexandre

doi:10.1127/0935-1221/2013/0025-2280

Cited by 45 publications

(66 citation statements)

References 31 publications

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“…All Raman spectrometry analyses were done at room temperature. Salinity of the aqueous phase in fluid inclusions was estimated by following the method of Caumon et al [45] and is expressed in wt.% NaCl eq. The uncertainty of the measurement is ±0.3 wt.% NaCl eq.…”

Section: Raman Spectrometry Fluid Inclusions Were Analysed Bymentioning

confidence: 99%

“…Salinity of the fluid inclusions can be estimated in two ways: (i) from the microthermometric data by knowing the nature of the cations-dominated chemical system, which can be determined by the measurement of e and by using experimentally known model systems, such as H 2 O-NaCl or H 2 O-NaCl-CaCl 2 ([43] and references therein), or (ii) from the Raman spectrometry analysis of the aqueous phase, which allows estimating the chlorinity with a similar precision to the microthermometry [45]. Both methods were used in the present study.…”

Section: Salinity Calculationmentioning

confidence: 99%

“…Considering the problem of m Hl and m Hh measurements, the Raman spectrometry represents an interesting alternative to estimate the bulk salinity of the fluid inclusions with a fast, systematic, and reproducible acquisition with accuracy better than ±10% on average [45]. The method developed by Caumon et al [45] has been calibrated only for NaCl solutions, which may possibly lead to a bias in the salinity estimation of LiCl-rich fluid inclusions due to the deformation of the stretching band of water induced by Li. Nevertheless, previous study by Dubessy et al [56] has shown that the Raman calibration curve for LiCl solutions is similar to the one of CaCl 2 , both differing slightly from the calibration curve of NaCl.…”

Section: Estimation Of the Salinity From The Raman Spectrometrymentioning

confidence: 99%

“…Nevertheless, previous study by Dubessy et al [56] has shown that the Raman calibration curve for LiCl solutions is similar to the one of CaCl 2 , both differing slightly from the calibration curve of NaCl. Consequently, the salinity of the aqueous phase in fluid inclusions estimated by following the method of Caumon et al [45] can be considered as a good approximation of the bulk salinity in the case of H 2 O-NaClLiCl solutions. Salinity calculated by Raman spectrometry is reported in Table 3.…”

Section: Estimation Of the Salinity From The Raman Spectrometrymentioning

confidence: 99%

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Geochemical Signature of Magmatic-Hydrothermal Fluids Exsolved from the Beauvoir Rare-Metal Granite (Massif Central, France): Insights from LA-ICPMS Analysis of Primary Fluid Inclusions

et al. 2017

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The Beauvoir granite (Massif Central, France) represents an exceptional case in the European Variscan belt of a peraluminous raremetal granite crosscutting an early W stockwork. The latter was strongly overprinted by rare-metal magmatic-hydrothermal fluids derived from the Beauvoir granite, resulting in a massive topazification of the quartz-ferberite vein system. This work presents a complete study of primary fluid inclusions hosted in quartz and topaz from the Beauvoir granite and the metasomatized stockwork, in order to characterize the geochemical composition of the magmatic fluids exsolved during the crystallization of this evolved rare-metal peraluminous granite. Microthermometric and Raman spectrometry data show that the earliest fluid (L1) is of high temperature (500 to >600 ∘ C), high salinity (17-28 wt.% NaCl eq), and Li-rich ( e < −70 ∘ C) with Na/Li ratios ∼5. LA-ICPMS analyses of L1-type fluid inclusions reveal that the chemical composition of this magmatic-hydrothermal fluid is dominated by Na, K, Cs, and Rb, with significant concentrations (10 1 -10 4 ppm) in rare-metals (W, Nb, Ta, Sn, and Li). This study demonstrates that primary fluid inclusions preserved the pristine signature of the magmatic-hydrothermal fluids in the Beauvoir granite but also in the metasomatized W stockwork, despite the distance from the granitic cupola (>100 m) and interaction with external fluids.

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Section: Raman Spectrometry Fluid Inclusions Were Analysed Bymentioning

confidence: 99%

Section: Salinity Calculationmentioning

confidence: 99%

Section: Estimation Of the Salinity From The Raman Spectrometrymentioning

confidence: 99%

Section: Estimation Of the Salinity From The Raman Spectrometrymentioning

confidence: 99%

See 2 more Smart Citations

Geochemical Signature of Magmatic-Hydrothermal Fluids Exsolved from the Beauvoir Rare-Metal Granite (Massif Central, France): Insights from LA-ICPMS Analysis of Primary Fluid Inclusions

et al. 2017

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“…Salinity is expressed as weight equivalent percent NaCl (wt.% NaCl eq.) and has been calculated using the measured ice melting temperature (Tm Ice) with the equation of Bodnar (1993) and Raman analyses (Caumon et al, 2013(Caumon et al, , 2015.…”

Section: Fluid Inclusion Analysesmentioning

confidence: 99%

Magmatic and hydrothermal behavior of uranium in syntectonic leucogranites: The uranium mineralization associated with the Hercynian Guérande granite (Armorican Massif, France)

Ballouard

Poujol

Boulvais

et al. 2017

Ore Geology Reviews

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT Abstract:Most of the hydrothermal uranium (U) deposits from the European Hercynian belt (EHB) are spatially associated with Carboniferous peraluminous leucogranites. In the southern part of the Armorican Massif (French part of the EHB), the Guérande peraluminous leucogranite was emplaced in an extensional deformation zone at ca. 310 Ma and is spatially associated with several U deposits and occurrences. The apical zone of the intrusion is structurally located below the Pen Ar Ran U deposit, a perigranitic vein-type deposit where mineralization occurs at the contact between black shales and Ordovician acid metavolcanics. In the Métairie-Neuve intragranitic deposit, uranium oxide-quartz veins crosscut the granite and a metasedimentary enclave. A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT

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Raman spectra of water in fluid inclusions: II. Effect of negative pressure on salinity measurement

Tarantola

Caumon

2015

J Raman Spectroscopy

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International audienceSalinity of fluid inclusions is usually determined by microthermometry, but it becomes unsuitable in case of metastability of the aqueous fluid because of thermodynamics indetermination. Raman microspectrometry of water in individual aqueous fluid inclusions can provide chemical information about fluid composition, in particular the concentration of chloride ions. The regular method consists in correlating the deformation of the OH stretching vibration band of liquid water in the region assigned to hydrogen-bonded OH groups, with chloride concentration. In order to evaluate the ability of Raman spectroscopy to determine salinity of metastable fluid inclusions, the Raman spectra of water trapped in two natural fluid inclusions were recorded at various temperatures in two physical states of the liquid phase, at equilibrium with vapor or metastable at negative pressure. The difference in salinity measured in the two states increased when temperature decreased, i.e. when the intensity of metastability increased. Metastability was then expressed in negative pressure scale (MPa) by thermodynamic modeling of the fluid trapped in the inclusions and correlated to salinity relative difference. The quantification of this effect led us to conclude that salinity expressed in mass% NaCleq. was overestimated of about 1% per 10-15MPa of negative pressure. If the negative pressure can be quantified, it is thus possible to determine the salinity of metastable fluid inclusions by Raman spectroscopy

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Fused-silica capillary capsules (FSCCs) as reference synthetic aqueous fluid inclusions to determine chlorinity by Raman spectroscopy

Cited by 45 publications

References 31 publications

Geochemical Signature of Magmatic-Hydrothermal Fluids Exsolved from the Beauvoir Rare-Metal Granite (Massif Central, France): Insights from LA-ICPMS Analysis of Primary Fluid Inclusions

Geochemical Signature of Magmatic-Hydrothermal Fluids Exsolved from the Beauvoir Rare-Metal Granite (Massif Central, France): Insights from LA-ICPMS Analysis of Primary Fluid Inclusions

Magmatic and hydrothermal behavior of uranium in syntectonic leucogranites: The uranium mineralization associated with the Hercynian Guérande granite (Armorican Massif, France)

Raman spectra of water in fluid inclusions: II. Effect of negative pressure on salinity measurement

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