Raman spectroscopy of pure H2O and NaCl-H2O containing synthetic fluid inclusions in quartz—a study of polarization effects

Baumgärtner, Miriam K.; Bakker, Ronald J.

doi:10.1007/s00710-008-0028-z

Cited by 66 publications

(47 citation statements)

References 21 publications

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“…The deconvolution of Raman spectra collected on inclusions, shows the typical Raman OH stretching vibration bands (deconvoluted peak positions: peak 1¼3333 cm À 1 , peak 2¼3457 cm À 1 , peak 3 ¼3576 cm À 1 ) of salt water [11]. We conclude that the fluid inclusions in the salt crystals are saturated brine.…”

Section: Tabular Hopper Crystalsmentioning

confidence: 89%

Characterization of sodium chloride crystals grown in microgravity

Fontana¹,

Schefer²,

Pettit³

2011

Journal of Crystal Growth

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Section: Tabular Hopper Crystalsmentioning

confidence: 89%

Characterization of sodium chloride crystals grown in microgravity

Fontana¹,

Schefer²,

Pettit³

2011

Journal of Crystal Growth

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“…The spectra shown in absorbance units and wavenumbers (cm , in the mid-IR region. The Raman spectroscopy characterization of liquid and gaseous compounds, solid phases, and solute species in fluid inclusions is supported by studies and catalogs of reference spectra for main phases (Bény et al, 1982;Harvey and Butler, 1986;Dubessy et al, 1989;Rosso and Bodnar, 1995;Burke, 2001;Baumgartner and Bakker, 2009;White, 2009;Frezzotti et al, 2012;Levresse et al, 2016).…”

Section: Analytical Proceduresmentioning

confidence: 99%

Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Aguilera

Layana

Rodríguez-Díaz

et al. 2016

andgeo

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ABSTRACT.A multidisciplinary study that includes processing of Landsat ETM+ satellite images, chemistry of gas condensed, mineralogy and chemistry of fumarolic deposits, and fluid inclusion data from native sulphur deposits, has been carried out in the Lastarria Volcanic Complex (LVC) with the objective to determine the distribution and characteristics of hydrothermal alteration zones and to establish the relations between gas chemistry and fumarolic deposits. Satellite image processing shows the presence of four hydrothermal alteration zones, characterized by a mineral assemblage constituted mainly by clay minerals, alunite, iron oxides, and more subordinated ferrous minerals and goethite. Hydrothermal alteration zones present in the Lastarria sensu stricto volcano are directly related to the recent fumarolic activity. Geochemistry of fumarolic gas condensed, obtained from two fumaroles at temperatures between 328 and 320 °C, has allowed detecting 37 diverse elements corresponding to halogens, chalcophiles, siderophiles, alkali metals, alkali earth metals and Rare Earth Elements (REE), with concentrations that vary widely between 5,620 ppm (chlorine) and 0.01 ppm (Mo, Ag, Sn, Pb, Se, Mg and Cr). Logarithm of Enrichment Factor (log EF i ) for each element present values between 6.35 (iodine) and <1 (K, Na, Ca, Fe and Al). Those elements are originated primarily from a magmatic source, whereas at shallow level a hydrothermal source contributes typical rock-related elements, which are leached from the wall rock by a strong interaction with hyperacid fluids. Mostly of elements detected are transported to the surface in the fumarolic emissions as gaseous species, while very few elements (Mg, Ca and Al) are transported in silicate aerosols. A wide spectrum of minerals are present in the fumarolic deposits, which are constituted by sublimates and incrustations, and the main minerals phases are distributed in six mineral families, corresponding to sulphates, hydrated sulphates, sulphides, halides, carbonates, silicates and native element minerals. The sublimate/incrustation minerals are dominated by the presence of sulphate, sulphur, chlorine and diverse rock-related elements, which are formed by processes that include a. oxidation of gaseous phase; b. strong rock-fluid interaction; c. dissolution of silicate minerals and volcanic glass; d. gas-water interaction; e. deposition/precipitation of saline bearing minerals; f. oxidation of sublimates/incrustations to form secondary minerals and g. remobilization of sulphur deposits by meteoric water. Despite that sublimate/ incrustation minerals are dominated by rock-related elements, its chemistry shows high contents of high-volatile elements as As, Sb, Cd, among others. Fluid inclusions studies carried out in thin pseudobanded native sulphur from fumarolic deposits, by use of Raman and infrared spectroscopy combined with microthermometry analyses, provided evidence of H 2 O, CO 2 , H 2 S, SO 4 , COS bearing fluids, homogenization temperatures around 110 °C and salinities v...

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“…The calculation was done using the method of [34], which is based on the integrals of the peak areas between 2900-3300 cm −1 (X) and 3300-3700 cm −1 (Y) ( Table 4). The effect of birefringence was decreased with measuring inclusions in increased depth, according to the suggestion of [33]. Because the OH-peak of datolite is also in this range, not only the background, but also the datolite OH peak measured in an inclusion-free area was substracted -after normalization to equal intensity-from the results of measurements performed in the fluid inclusions (Fig.…”

Section: P1 Inclusions In Spongy Datolite Showed the Lowest Homogenismentioning

confidence: 64%

“…Though a more recent calculation method is known (e.g. [33]), here the older method of [34] was used, as the cited new method Salinities are given in NaCl equiv. mass% was developed in quartz and requires special orientation of the laser polarisation plane in order to eliminate the effect of the birefrigence of the mineral.…”

Section: P1 Inclusions In Spongy Datolite Showed the Lowest Homogenismentioning

confidence: 99%

Fluid inclusion studies in datolite of low grade metamorphic origin from a Jurassic pillow basalt series in northeastern Hungary

2012

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Abstract:The Jurassic pillow basalt blocks in the Szarvaskő Unit in the SW-Bükk Mountains are incorporated into an accretionary mélange of Cretaceous age which had been displaced from the Dinarides to NE-Hungary during the Alpine-Carpathian collision. The pillow basalt series is a part of an incomplete remnant of an ophiolite-like sequence from which ultramafic units and sheeted dikes are almost completely absent. At the studied Egerbakta quarry, closely packed pillow, pillow fragmented hyaloclastite breccia and peperitic facies of submarine basaltic volcanism were recognized. Peperitic facies was formed by local admixture of unconsolidated siliciclastic sediment into the basaltic lava. Basaltic pillows contains short and thin prehnite-chlorite-carbonate-quartz veins formed during the interaction of seawater with the cooling lava, as well as cross-cutting datolite-prehnite-quartzchlorite-albite bearing veins. Calcite in the short cooling cracks crystallised from upheated seawater at around 160 • C temperature and 0.5-0.6 kbar pressure (water depth of about 5-6 km). Datolite precipitations in veins can be classified into at least three different textural-morphological types but all of them contain methane bearing primary fluid inclusion assemblages, with variable methane/water ratios, suggesting an inhomogeneous entrapment from a heterogeneous aqueous-carbonic fluid. End member primary fluid inclusions contain aqueous liquid with methane rich vapour phase and apparently methane only inclusions characterized by liquid phase on room temperature. A combination of results from fluid inclusion microthermometry, Raman spectroscopy (used not only for phase identification but also for determination of salinities) and temperatures calculated from chlorite compositions, show that the precipitation of datolite had taken place from low salinity (0.2-2 NaCl equiv. mass%) aqueous-methane fluids under increasing temperature and pressure (from 160 to 210 • C, and from 0.6 to 1.1 kbar) conditions. The elevated pressures and temperatures in comparison to the submarine hydrothermal processes suggest that the datolite bearing mineral parageneses had been formed during the progression of Alpine very low grade metamorphic processes.

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Raman spectroscopy of pure H2O and NaCl-H2O containing synthetic fluid inclusions in quartz—a study of polarization effects

Cited by 66 publications

References 21 publications

Characterization of sodium chloride crystals grown in microgravity

Characterization of sodium chloride crystals grown in microgravity

Hydrothermal alteration, fumarolic deposits and fluids from Lastarria Volcanic Complex: A multidisciplinary study

Fluid inclusion studies in datolite of low grade metamorphic origin from a Jurassic pillow basalt series in northeastern Hungary

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