This is the README.txt file in the upload.
Data dio 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 betwe