Pyroxene Infrared Spectra in the OH region (generally 4000 - 3000 cm^-1)

Data files and images of OH in orthopyroxenes

• Enstatite, HS 37 image. Enstatite, MD-57 (Mg_1.72 ), from Chichijma, Bonin Islands, Japan. Image normalized to 1.0 mm thickness. Data files: alpha, 45K; beta, 45K; gamma, 45K;
• Enstatite, HS 59, image. Enstatite, GRR 40 (Mg_1.70), from Bamble, Norway. Image normalized to 1.0 mm thickness. Contamination from layer silicates is apparent above 3600 cm^-1.
• Enstatite, HS 53, image. Enstatite, GRR 1650a (Mg_1.73), from India. Image normalized to 1.0 mm thickness.
• Enstatite, HS 48, image. Enstatite, PMR-54 (Mg_1.73), from the Premier Mine, South Africa. Image normalized to 1.0 mm thickness.

Data files and images of OH in clinopyroxenes

• Aegirine CIT 11832 spectrum. Aegirine from a nepeline syenite pegmatite from Magnet Cove, Arkansas, USA. Image normalized to 1.0 mm thickness. Data files: a; b; c;
• Augite GRR 1646 ispectrum. Augite from a xenocryst in a mantle diatreme from Hopi Butte, Arizona, USA. Image normalized to 1.0 mm thickness. Data files: a; b; c;
• Diopside CIT 11221 spectrum. Diopside from a methmorphic deposit at Rajasthan, India. Image normalized to 1.0 mm thickness. Data files: a; b; c;
• Ompacite HRV 147 spectrum. Ompacite from an eclogite xenolith in the Roberts Victor kimberlite, South Africa. This is one of the most hydrous clinopyroxenes we have encountered to date. Image normalized to 1.0 mm thickness. Data files: a; b; c;
• Spodumene GRR 151 spectrum. Spodumene from a gem pegmatite near Pala, California, USA. OH content estimated at ~0.9 ppm wt as H₂O. Image normalized to 1.0 mm thickness. Data files: alpha; beta; gamma;
  

 

 
 

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