Infrared spectra of pyroxenes (crystalline chain silicates) at room temperature
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PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658
Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature
https://doi.org/10.1093/mnras/staa2227
We present quantitative room-temperature spectra of 17 Mg-, Fe-, and Ca-bearing ortho- and clinopyroxenes, and a Ca-pyroxenoid in order to discern trends indicative of crystal structure and a wide range of composition. Data are produced using a diamond anvil cell: our band strengths are up to six times higher than those measured in KBr or polyethylene dispersions, which include variations in path length (from grain size) and surface reflections that are not addressed in data processing.
This is the README.txt file in the upload.
Data doi is : 10.5281/zenodo.5564539
PYROXENE SPECTRA from Bowey, J. E., Hofmeister, A., Keppel, E. 2020 MNRAS, 497, 3658
Infrared Spectra of Pyroxenes (Crystalline Chain Silicates) at Room Temperature
https://doi.org/10.1093/mnras/staa2227
Spectra are in Figure 4 and compositions are listed in Table 1.
Fig 4 Left: En-Fs orthopyroxenes (orthoplot.pdf)
En99tau.dat
En92tau.dat
En90tau.dat
En85tau.dat (lower resolution MID-ir spectrum)
En55tau.dat
En40tau.dat
En12tau.dat
En1tau.dat
Pigeonite: Wo10En62tau.dat
Right: Clinopyroxenes in the Enstatite-Diopside-Wollastonite
Diopside-Hedenbergite solid-solution series (enst-wol.pdf)
En-Dp series.
Wo21En79tau.dat
Wo30En70tau.dat
Wo40En60tau.dat
Wollastonite: Wo99En1tau.dat
Dp-Hd series
Wo50En50tau.dat
Wo50En47tau.dat
Wo49En36tau.dat
Wo47En6tau.dat
Pigeonite: Wo36En37tau.dat
files are two column ascii. column 1 increment varies between files.
column 1 (x) is in increasing wavenumber (cm^-1)
column 2 (tau) is absorbance in optical depth units per micron thickness
of sample.
col1: x to wavelength (micron) conversion is 10^4/x
col2: tau to mass absorption coefficient conversion (kappa) is tau *
10^4/rho where rho is the mass density of the specimen (gcm^-3),
estimates are in table 1 [Note that kappa contains inherent
uncertainties due to the spacing between the grains sampled and
the effects discussed in Section 7.1]
创建时间：
2024-07-17
