Infrared reflectance spectra (2. 2-15. mu. m) of plagioclase feldspars

Journal Article · Sat Jun 01 00:00:00 EDT 1991 · Geophysical Research Letters (American Geophysical Union); (United States)

DOI:https://doi.org/10.1029/91GL01008· OSTI ID:5421649

Nash, D B ^[1]; Salisbury, J W ^[2]

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1. San Juan Capistrano Research Inst., CA (United States)
2. Johns Hopkins Univ., Baltimore, MD (United States)

Laboratory results show that (1) the Christiansen frequency (CF) feature in mid-infrared reflectance spectra of powders can be used to accurately distinguish plagioclase composition, and (2) the wavelength position of the CF is not affected by vitrification of the plagioclase. Although the CF position does not distinguish glass from crystalline forms of plagioclase, other features (combination-tone, overtone, restrahlen bands) in the mid-IR spectra of plagioclase can be used for that purpose. These results have important implications for application of thermal emission spectroscopy to mapping the surface composition of regolith-covered planetary bodies like the Moon, Mars, and asteroids.

• OSTI ID: 5421649
• Journal Information: Geophysical Research Letters (American Geophysical Union); (United States), Vol. 18:6; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
58 GEOSCIENCES
ANORTHOSITES
EMISSION SPECTROSCOPY
CHEMICAL COMPOSITION
INFRARED RADIATION
INFRARED SPECTRA
MEASURING METHODS
REFLECTIVITY
REMOTE SENSING
ELECTROMAGNETIC RADIATION
GABBROS
IGNEOUS ROCKS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
PLUTONIC ROCKS
RADIATIONS
ROCKS
SPECTRA
SPECTROSCOPY
SURFACE PROPERTIES
400102* - Chemical & Spectral Procedures
580000 - Geosciences