Pyroxene Visible Spectra (generally 350 - 2500 nm)

Pictures of pyroxenes showing the pleochroism

Images of representative orthopyroxene spectra

• enstatite image; Enstatite (bronzite, Fs 14.0), GRR 40, Bamble, Norway, 0.100 mm thick with Fe²⁺ in the M2 site dominating the spectrum. Data Files: alpha; beta; gamma. Image of the alpha band on scale (0.095 mm thick). Data File: alpha on scale
• enstatite image; Enstatite (hypersthene, Fs 39.5), GRR 1653, Summit Rock, Oregon, 0.10 mm thick With type Fe²⁺ in the M2 site dominating the spectrum and a M1 site feature near 1200 nm. Data Files: alpha; beta; gamma
  

Synthetic orthopyroxenes containing various transition elements.

• (Mg,Co)SiO₃, GRR 247.  Data files:  alpha; beta; gamma
• (Mg,Ni)SiO₃, GRR 248.  Data files:  alpha; beta; gamma

Images of representative clinopyroxene spectra

• CIT 13748 image; Augite, GRR 583, CIT 13748, Cedar Butte, Oregon, 0.10 mm thick with type Fe²⁺ in the M2 site dominating the spectrum. Data Files: alpha; beta; gamma
• CIT 7524 image; Diopside, GRR 472, CIT 7524, Binntal Wallis, Switzerland, 0.50 mm thick. This shows both Fe²⁺ and Fe²⁺ - Fe³⁺ intervalance charge transfer. Data Files: alpha; beta; gamma
• RDS 62047-70 image; Diopside, chromian, Russia, 1.00 mm thick.  The band at 1030 nm is from Fe²⁺ whereas the other features are from Cr³⁺. The crystal contains 0.558 wt% Cr₂O₃.  This was taken with light polarized along each crystallographic axis. Data Files: E||b.
• Jadeite image; Jadeite from Kazakhstan, polycrystalline mass run unpolarized and normalized to 10 mm thick.  The spectrum is dominated by Cr³⁺ but also shows the Fe³⁺ band near 440 nm. Data file:  Contributed data from Anton Vasiliev, LAL, Moscow: unpolarized.
• GRR 151 image; Spodumene, GRR 151, lavendar colored kunzite variety, Pala, California, USA, 10.0 mm thick showing Mn³⁺ features. Data Files: alpha not ready; beta not ready ; gamma not ready

Data Files

• no other data files at this time

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