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Journal Article

Feldspar Raman shift and application as a magmatic thermobarometer Available to Purchase

Kenneth S. Befus, Jung-Fu Lin, Miguel Cisneros, Suyu Fu
Published: 01 April 2018
American Mineralogist (2018) 103 (4): 600–609.
DOI: https://doi.org/10.2138/am-2018-6157
...Kenneth S. Befus; Jung-Fu Lin; Miguel Cisneros; Suyu Fu Abstract We calibrate the pressure-dependent Raman shift of feldspars by measuring spectra of 9 compositionally diverse plagioclase and alkali feldspars at pressures ranging between 0.1 MPa and 3.6 GPa using a diamond-anvil cell coupled...
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View PDF for article title, Feldspar <span class="search-highlight">Raman</span> <span class="search-highlight">shift</span> and application as a magmatic thermobarometer
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Journal Article

Predicting olivine composition using Raman spectroscopy through band shift and multivariate analyses Available to Purchase

Laura B. Breitenfeld, M. Darby Dyar, C.J. Carey, Thomas J. Tague, Jr., Peng Wang, Terry Mullen, Mario Parente
Published: 01 November 2018
American Mineralogist (2018) 103 (11): 1827–1836.
DOI: https://doi.org/10.2138/am-2018-6291
... of these two bands to Mg/Fe contents. In this work, Raman spectra of 93 olivine samples were acquired on either Bruker's 532 nm (laser wavelength) Senterra or BRAVO (785/852.3 nm) spectrometer. This paper compares the two-peak band shift univariate method with two multivariate methods: partial least squares...
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View PDF for article title, Predicting olivine composition using <span class="search-highlight">Raman</span> spectroscopy through band <span class="search-highlight">shift</span> and multivariate analyses
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Journal Article

Evaluation of residual pressure in an inclusion–host system using negative frequency shift of quartz Raman spectra Available to Purchase

Yui Kouketsu, Tadao Nishiyama, Takeshi Ikeda, Masaki Enami
Published: 01 February 2014
American Mineralogist (2014) 99 (2-3): 433–442.
DOI: https://doi.org/10.2138/am.2014.4427
...Yui Kouketsu; Tadao Nishiyama; Takeshi Ikeda; Masaki Enami Abstract Raman spectra of quartz inclusions in garnet hosts of low-pressure/temperature metamorphic rocks from the Yanai district in the Ryoke belt (around 0.1–0.3 GPa/500–600 °C), Southwest Japan, exhibit frequency (peak position) shifts...
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View PDF for article title, Evaluation of residual pressure in an inclusion–host system using negative frequency <span class="search-highlight">shift</span> of quartz <span class="search-highlight">Raman</span> spectra
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Journal Article

Temperature dependence of Raman shifts and line widths for Q 0 and Q 2 crystals of silicates, phosphates, and sulfates Available to Purchase

H. Wayne Nesbitt, G. Michael Bancroft, Grant S. Henderson
Published: 01 June 2018
American Mineralogist (2018) 103 (6): 966–976.
DOI: https://doi.org/10.2138/am-2018-6314
...H. Wayne Nesbitt; G. Michael Bancroft; Grant S. Henderson Abstract The temperature dependence of Raman shifts and line widths (full-width at half maxima or FWHM) for the A 1 symmetric stretch of TO 4 (T = Si, P, S) have been analyzed for nine alkali and alkaline earth silicates, phosphates...
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View PDF for article title, Temperature dependence of <span class="search-highlight">Raman</span> <span class="search-highlight">shifts</span> and line widths for Q 0 and Q 2 crystals of silicates, phosphates, and sulfates
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Journal Article

Raman shifts of c -BN as an ideal P-T sensor for studying water-rock interactions in a diamond-anvil cell Available to Purchase

Lu’an Ren, Chao Wang, Xiaowei Li, Renbiao Tao
Published: 01 March 2023
American Mineralogist (2023) 108 (3): 455–464.
DOI: https://doi.org/10.2138/am-2022-8372
... -dependent Raman shift of c -BN (e.g., TO mode) can be distinguished from that of the diamond anvil ( c -BN at ~1054 cm –1 vs. diamond at ~1331 cm –1 at ambient conditions), making c -BN a potential P-T sensor for diamond-anvil cell (DAC) experiments. However, the Raman shift of c -BN has not been well...
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View PDF for article title, <span class="search-highlight">Raman</span> <span class="search-highlight">shifts</span> of c -BN as an ideal P-T sensor for studying water-rock interactions in a diamond-anvil cell
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Journal Article

Effects of electronegativities and charge delocalization on Q 2 Raman shifts of alkaline- and alkaline earth-bearing glasses and metasilicate crystals Available to Purchase

H. Wayne Nesbitt, Phil A.W. Dean, Michael Bancroft, Grant S. Henderson
Published: 01 November 2022
American Mineralogist (2022) 107 (11): 2044–2053.
DOI: https://doi.org/10.2138/am-2022-8172
...H. Wayne Nesbitt; Phil A.W. Dean; Michael Bancroft; Grant S. Henderson Abstract Raman shifts of the symmetric stretch of silicate Q 2 species vary over a range of ~90 cm −1 in crystals and glasses containing alkali and alkaline earth oxides. The shifts display a striking, sympathetic relationship...
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View PDF for article title, Effects of electronegativities and charge delocalization on Q 2 <span class="search-highlight">Raman</span> <span class="search-highlight">shifts</span> of alkaline- and alkaline earth-bearing glasses and metasilicate crystals
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Raman spectrum (selected Raman shift area) for yuchuanite-(Y).

Raman spectrum (selected Raman shift area) for yuchuanite-(Y). Available to Purchase

Published: 01 March 2024
Figure 4. Raman spectrum (selected Raman shift area) for yuchuanite-(Y).
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Evolution of Raman modes with temperature: (a) Raman shift with temperature for sample 1#; (b) Raman shift with temperature for sample 2#; (c) Raman shift with temperature for sample 3#; (d) Intensity ratio of the 472 and 514 cm−1 modes as a function of temperature.

Evolution of Raman modes with temperature: (a) Raman shift with temperature... Available to Purchase

Published: 01 November 2018
Fig. 8 Evolution of Raman modes with temperature: (a) Raman shift with temperature for sample 1#; (b) Raman shift with temperature for sample 2#; (c) Raman shift with temperature for sample 3#; (d) Intensity ratio of the 472 and 514 cm −1 modes as a function of temperature.
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Raman spectrum in the frequency region of the one-phonon Raman shift of 13C diamond and the natural diamond of the anvils of the HDAC.

Raman spectrum in the frequency region of the one-phonon Raman shift of 13... Available to Purchase

Published: 01 November 2010
F igure 2. Raman spectrum in the frequency region of the one-phonon Raman shift of 13 C diamond and the natural diamond of the anvils of the HDAC.
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The correlation between homogenization temperature with Raman shift and trapping pressure is represented by a crossplot of trapping pressure versus trapping temperature for methane inclusions in calcite and quartz vein from wells JYA, JYB, and JYC in the Jiaoshiba area. Crossplot of homogenization temperature versus Raman shift (A) and trapping pressure (B) for primary methane inclusion in calcite and quartz vein. Crossplot of homogenization temperature versus Raman shift (C) and trapping pressure (D) for secondary methane inclusion in calcite and quartz vein.

The correlation between homogenization temperature with Raman shift and tra... Available to Purchase

Published: 01 October 2024
Figure 9. The correlation between homogenization temperature with Raman shift and trapping pressure is represented by a crossplot of trapping pressure versus trapping temperature for methane inclusions in calcite and quartz vein from wells JYA, JYB, and JYC in the Jiaoshiba area. Crossplot
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Crossplot of homogenization temperature versus Raman shift (A) and trapping pressure (B) for methane-bearing aqueous inclusions in calcite and quartz veins from wells JYA, JYB, and JYC shows that Raman shift decreases with the homogenization temperature and the trapping pressure increases with the homogenization temperature.

Crossplot of homogenization temperature versus Raman shift (A) and trapping... Available to Purchase

Published: 01 October 2024
Figure 10. Crossplot of homogenization temperature versus Raman shift (A) and trapping pressure (B) for methane-bearing aqueous inclusions in calcite and quartz veins from wells JYA, JYB, and JYC shows that Raman shift decreases with the homogenization temperature and the trapping pressure
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(a) Relationship between Mg content calculated from ν1 Raman shift (Perrin et al. 2016) and Mg measured using LA-ICP-MS (N = 90). The 1:1 line is shown in black. (b) Radial measurements of octocoral Mg content from P. cf. secundum 238 m (slow-axis) taken using the Raman ν1 peak (black, N = 26) and LA-ICP-MS (blue, N = 26) (c) as well as the relationship between the two. All error bars represent ±1 SD with the shaded regions representing the 95% CI. Note that the data from subplot (b) was taken along a radial transect from the cross section surface to the inner medullar region (see Fig. 2 for a visual example). (Color online.)

( a ) Relationship between Mg content calculated from ν 1 Raman shift ( Pe... Available to Purchase

Published: 01 May 2023
Figure 3. ( a ) Relationship between Mg content calculated from ν 1 Raman shift ( Perrin et al. 2016 ) and Mg measured using LA-ICP-MS (N = 90). The 1:1 line is shown in black. ( b ) Radial measurements of octocoral Mg content from P. cf. secundum 238 m (slow-axis) taken using the Raman ν 1
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Mean ν1 FWHM, Mg content (from ν1 Raman shift), and residual ν1 FWHM of octocoral surface skeleton (N = 28) with respect to potential density (an analog of depth). Error bars represent ±1 SD and the shaded regions represent the 95% CI. (Color online.)

Mean ν 1 FWHM, Mg content (from ν 1 Raman shift), and residual ν 1 FWHM ... Available to Purchase

Published: 01 May 2023
Figure 4. Mean ν 1 FWHM, Mg content (from ν 1 Raman shift), and residual ν 1 FWHM of octocoral surface skeleton (N = 28) with respect to potential density (an analog of depth). Error bars represent ±1 SD and the shaded regions represent the 95% CI. (Color online.)
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Mean Mg content (from ν1 Raman shift) of octocoral surface skeleton with respect to major oceanographic variables covered in this study (N = 28). Error bars represent ±1 SD and the shaded regions represent the 95% CI. (Color online.)

Mean Mg content (from ν 1 Raman shift) of octocoral surface skeleton with ... Available to Purchase

Published: 01 May 2023
Figure 6. Mean Mg content (from ν 1 Raman shift) of octocoral surface skeleton with respect to major oceanographic variables covered in this study (N = 28). Error bars represent ±1 SD and the shaded regions represent the 95% CI. (Color online.)
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Mean intra-sample octocoral ν1 FWHM, Mg content (from ν1 Raman shift, abbreviated as “RS”), and residual ν1 FWHM with respect to octocoral branch diameter for three of the five specific samples (each with N = 100): (a) P. cf. secundum from 273 m; (b) H. imperiale/laauense from 444 m; (c) Acanella spp. from 823 m. All specimens are shown in Online Materials1 Figure S7. Each measurement location (a five-point transect) is shown by the red markers. Branch diameter serves as a proxy for ontogenetic growth rates (e.g., smaller branches = faster skeletal growth). A general additive model was used for the trendlines where error bars are ±1 SD, shaded regions are the 95% CI, and DevExpl represents the deviance explained by the model. (Color online.)

Mean intra-sample octocoral ν 1 FWHM, Mg content (from ν 1 Raman shift, a... Available to Purchase

Published: 01 May 2023
Figure 7. Mean intra-sample octocoral ν 1 FWHM, Mg content (from ν 1 Raman shift, abbreviated as “RS”), and residual ν 1 FWHM with respect to octocoral branch diameter for three of the five specific samples (each with N = 100): ( a ) P. cf. secundum from 273 m; ( b ) H. imperiale/laauense
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Pressure dependence the Raman shift with increasing pressure for natural kaolinite under non-hydrostatic condition. In here, (a) stands for the lattice vibrational mode (100–1000 cm–1), (b) represents the hydroxyl stretching mode (3500–3800 cm–1), respectively.

Pressure dependence the Raman shift with increasing pressure for natural ka... Open Access

Published: 01 March 2022
Figure 4. Pressure dependence the Raman shift with increasing pressure for natural kaolinite under non-hydrostatic condition. In here, ( a ) stands for the lattice vibrational mode (100–1000 cm –1 ), ( b ) represents the hydroxyl stretching mode (3500–3800 cm –1 ), respectively.
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Mn3+/(Mn3++Mn4+) ratio vs. Raman shift frequency of the highest frequency vibrational mode for the different phyllomanganates included in this study. (Color online.)

Mn 3+ /(Mn 3+ +Mn 4+ ) ratio vs. Raman shift frequency of the highest frequ... Available to Purchase

Published: 01 March 2021
Figure 24. Mn 3+ /(Mn 3+ +Mn 4+ ) ratio vs. Raman shift frequency of the highest frequency vibrational mode for the different phyllomanganates included in this study. (Color online.)
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Γ vs. Raman shift of the antisymmetric SiO4 stretching B1g mode near 1008 cm−1 of partially exposed crystals with highlighted CC-emission domains.

Γ vs. Raman shift of the antisymmetric SiO 4 stretching B 1g mode near 10... Open Access

Published: 01 July 2020
Figure 2. Γ vs. Raman shift of the antisymmetric SiO 4 stretching B 1g mode near 1008 cm −1 of partially exposed crystals with highlighted CC-emission domains.
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Γ and Raman shift of partially exposed vs. completely buried zircon inclusions.

Γ and Raman shift of partially exposed vs. completely buried zircon inclusi... Open Access

Published: 01 July 2020
Figure 4. Γ and Raman shift of partially exposed vs. completely buried zircon inclusions.
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Temperature dependence of the Raman shift and FWHM for the SiO4 symmetric stretch peak in the Q0 species Mg2SiO4 (Kolesev and Geiger 2004) compared to the shifts and FWHM for other Q0 and Q2 species. (a) The Raman shifts for Mg2SiO4 (black circles) along with best least-squares linear fit to the data. (b) The standardized shifts [Ω(T) – Ω(298)] for Mg2SiO4 compared to the standardized shifts for the Q0 species Li3PO4 (open squares), and the Q2 species CaSiO3 (shaded triangles). The errors bars are all ±1 cm–1. (c) The FWHM for Mg2SiO4 compared to the FWHM for CaSiO3, and the best least squares linear fit for Mg2SiO4 are shown. The errors bars are all ±2 cm–1 in c. (d) The FWHM standardized to the line width at 298 K at 0 cm–1 for Mg2SiO4 compared to those for the four metasilicates shown earlier in Figure 2c. In d, the FWHM for Na2SiO3 for five values in the premelting region (1259–1348 K cm–1) are again omitted—see text.

Temperature dependence of the Raman shift and FWHM for the SiO 4 symmetric... Available to Purchase

Published: 01 June 2018
Figure 4. Temperature dependence of the Raman shift and FWHM for the SiO 4 symmetric stretch peak in the Q 0 species Mg 2 SiO 4 ( Kolesev and Geiger 2004 ) compared to the shifts and FWHM for other Q 0 and Q 2 species. ( a ) The Raman shifts for Mg 2 SiO 4 (black circles) along with best