Quartz-bearing C–O–H fluid inclusions diamond: Retracing the pressure–temperature path in the mantle using calibrated high temperature IR spectroscopy

Tomlinson, Emma L.; McMillan, Paul F.; Zhang, Ming; Jones, Adrian P.; Redfern, Simon A. T.

doi:10.1016/j.gca.2007.09.013

Cited by 16 publications

(6 citation statements)

References 66 publications

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“…Further, some micron-size fluid inclusions are widely distributed in hydrothermal quartz. Although decrepitation methods at low and medium temperatures (below 700 • C) can enhance the removal of volatile materials in quartz fluid inclusions, the micron-size fluid inclusions rarely are removed, especially in high-temperature quartz [7,8].…”

Section: Introductionmentioning

confidence: 99%

Mineralogy and Processing of Hydrothermal Vein Quartz from Hengche, Hubei Province (China)

2017

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Quartz occurs in many geological materials, and is used in numerous industrial fields as a raw material. Mineralogy and the processing of hydrothermal quartz were studied by optical microscope, electron probe microanalysis, scanning electron microscope, inductively coupled plasma-optical emission spectrometry, and inductively coupled plasma mass spectrometer. A combination of the geological occurrence of the quartz deposit, mineralogical studies, and the processing technologies of the hydrothermal quartz was accomplished. The results show that impurities within the quartz mainly include muscovite, hematite, apatite, and secondary fluid inclusions. The main chemical impurities are Al (353 µg·g −1 ), K (118 µg·g −1 ), Fe (61.2 µg·g −1 ), P (15.5 µg·g −1 ), Na (13.4 µg·g −1 ), Mg (11.8 µg·g −1 ), Ti (8.31 µg·g −1 ), and B (10.8 µg·g −1 ). Based on these results, a combined process consisting of calcination and fluoride-free pressure acid leaching was established to effectively decompose and dissolve the quartz, and remove gangue minerals and fluid inclusions. The calcination process not only removed volatile components; it also destroyed the crystal structure of gangue minerals and enhanced their release probabilities. The calcination process has a positive influence on the removal of impurity elements by the fluoride-free pressure acid leaching process. A total of 85.2 wt % and 84.0 wt % of impurity elements was removed using the leaching systems of HCl-NH 4 Cl and H 2 SO 4 -NH 4 Cl, respectively.

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Section: Introductionmentioning

confidence: 99%

Mineralogy and Processing of Hydrothermal Vein Quartz from Hengche, Hubei Province (China)

2017

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“…This type of work may help to identify the mechanisms by which phyllosilicates are altered through heating or weathering in the environment. There have been studies focusing on dynamics of hydrogen in silicates (Aines and Rossman 1985;Mookherjee et al 2001;Tomlinson et al 2007;Balan et al 2010;Smrčok et al 2011) and temperature dependencies of hydrogen species and their thermal stability (Keppler and Bagdassarov 1993;Su et al 2008;Pawley and Jones 2011;Yang et al 2011;Zhang and Moxon 2012). However, little is known about the thermodynamic behavior of phonon modes of phlogopite, and limited work has been carried out systematically, apart from some early investigations in the near infrared region (Vedder 1964;Fripiat et al 1965).…”

Section: Introductionmentioning

confidence: 99%

Optical phonons, OH vibrations, and structural modifications of phlogopite at high temperatures: An in-situ infrared spectroscopic study

Zhang

Tarantino

et al. 2016

American Mineralogist

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The thermal behavior of optical phonons and OH vibrations of phlogopite (a trioctahedral mica) was examined at temperatures up to 1000 K using in situ infrared spectroscopy. The results showed that with increasing temperature, O-K bands in phlogopite exhibited a relatively strong variation in frequency in a manner similar to those in muscovite. The work revealed that different types of OH bands (fundamentals and combinations) have very different thermal behavior or temperature dependence, and their absorption coefficients are commonly not constant on heating. OH combination bands that are associated with summation processes of multi-phonon interactions commonly show a decrease in their intensities on heating, but in contrast combination bands due to difference processes generally exhibit an increase. This means that temperature dependencies of their absorption coefficients need to be considered when using the Beer-Lambert law to determine or estimate OH contents or hydrogen concentrations at high temperatures. The results showed a structural anomaly associated with a discontinuity in the temperature derivative of the wavenumber of Al-O and Si-O vibrations and O-H stretching near 600 K. However, framework-related phonon modes in the FIR and MIR regions do not suggest a break of the original monoclinic structural symmetry in the investigated temperature region. The complex changes are attributed to temperature-induced alteration of local configuration involving TO 4 tetrahedra and a possible change of the orientation of OH dipoles, in addition to a previously reported distortion of MO 6 octahedra. Increasing temperature to 1000 K also causes partial dehydroxylation, as evidenced by the disappearance of the OH band near 3623 cm -1 and the decrease in OH band height and area of other OH bands. The study did not record the formation of H 2 O inside phlogopite as a result of partial dehydroxylation. The work offers new data and findings that have important implications in understanding the complex structural modifications and the behavior of phonon modes and the thermal stability of hydroxyls on approaching the dehydroxylation, as well as the way hydrogen is released from micas at high temperatures. Our data also show that phologpite becomes less transparent with increasing temperature suggesting a change of radiative properties and ability to transmit heat, which could be of interest for modeling thermal-transmission in crustal rocks.

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“…The high residual internal pressure of 1.3-2.1 GPa in the microinclusions, as inferred from the IR shift of quartz absorption bands (Navon, 1991;Tomlinson et al, 2007), suggest that the H 2 O phase in the microinclusions should be in the form of ice VI and/or ice VII (Bridgman, 1935;Datchi et al, 2000). Indeed, Kagi et al (2000) measured the OH-stretching plus HOH-bending combination band of water at ~5200 cm -1 in a cuboid diamond.…”

Section: Solid H 2 O -Ice VI and Ice Viimentioning

confidence: 98%

“…Microinclusions in fibrous and cloudy diamonds trapped high density fluids (HDFs) of diverse composition: saline, high-Mg carbonatitic and low-Mg carbonatitic to silicic melts/fluids (Navon et al, 1988;Weiss et al, 2009 and references therein). Upon cooling, secondary minerals crystallize and precipitate from the trapped HDFs; mica, apatite, carbonates and quartz were detected by IR spectroscopy (Chrenko et al, 1967;Navon et al, 1991;Schrauder and Navon, 1994;Zedgenizov et al, 2004;Tomlinson et al, 2007;Klein-BenDavid et al, 2007). Transmission electron microscopy (TEM) analyses confirm the presence of those phases as well as halides in the microinclusions (Guthrie et al, 1991;Walmsley and Lang, 1992a, b;Klein-BenDavid et al, 2006).…”

Section: Introductionmentioning

confidence: 95%

“…Microinclusions of all compositions also carry residual low-density hydrous solutions which gives rise to the IR absorption bands at ~3400 and ~1640 cm -1 , corresponding to the OH-stretching and HOH-bending vibration of water, respectively. Navon (1991) noted that the OH-stretching band measured in cubic and coated diamonds resembles that of liquid water; while the high residual internal pressure in the microinclusions (Navon, 1991;Tomlinson et al, 2007) suggests that ice VI should be the stable phase at room temperature. Kagi et al (2006) identified absorption of ice VI coexisting with liquid water in the stretching+bending combination band of molecular water at ~5200 cm -1 Zedgenizov et al (2006) pointed out that the shape and width of the OH-stretching band is different in cuboid diamonds from Siberia and Congo.…”

Section: Introductionmentioning

confidence: 99%

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The IR absorption spectrum of water in microinclusions-bearing diamonds

International Kimberlite Conference Extended Abstracts: 2012

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Quartz-bearing C–O–H fluid inclusions diamond: Retracing the pressure–temperature path in the mantle using calibrated high temperature IR spectroscopy

Cited by 16 publications

References 66 publications

Mineralogy and Processing of Hydrothermal Vein Quartz from Hengche, Hubei Province (China)

Mineralogy and Processing of Hydrothermal Vein Quartz from Hengche, Hubei Province (China)

Optical phonons, OH vibrations, and structural modifications of phlogopite at high temperatures: An in-situ infrared spectroscopic study

The IR absorption spectrum of water in microinclusions-bearing diamonds

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