Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs

Details Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..117b&link_type=abstract

Lunar and Planetary Science, volume 27, page 117

Mathematics

Logic

Iron Oxides, Mars, Mixtures, Reflectance Spectroscopy, Smectites

Scientific paper

These experiments indicate that chemically-formed and physically-formed mixtures of fine-grained ferric oxides and smectites produce different kinds of materials and that the method of incorporating ferric species into a smectite mineral has an important influence on the spectral properties. A few wt.% ferric oxide can be present .in the smectite structure without giving visible ferric features, whereas as few wt.% ferric oxide as hematite contributes significantly to the visible and NIR spectral properties of the sample. The NIR spectral brightness and NIR band strengths of the chemically-treated montmorillonites containing ferrihydrite and ferric sulfate species are relatively similar to those of natural montmorillonite. In contrast, the NIR spectral brightness and NIR band depths are both significantly reduced when small amounts of fine-grained hematite are mixed with these smectites. Physical mixtures .Christiansen feature towards longer wavelengths and decreased the intensity of the montmorillonite features near 20 m. Chemical and physical mixtures of smectites with ferrihydrite and fine-grained hematite are good models for the bright region material on Mars because of the chemical and mineralogical compositions of these samples, as well with ferrihydrite and hematite produced shifts in the montmorillonite as their visible and infrared region spectral properties.

Affiliated with

Also associated with

No associations

Rating

Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Visible and Infrared Reflectance Spectroscopy of Physical and Chemical Ferric-Smectite Mixtures as Mars Soil Analogs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1611253