Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region

Details Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005dps....37.5906t&link_type=abstract

American Astronomical Society, DPS meeting #37, #59.06; Bulletin of the American Astronomical Society, Vol. 37, p.755

Mathematics

Logic

Scientific paper

Illite is a clay mineral that is intermediate in composition and structure between muscovite and montmorillonite. Illite and other clay minerals were present in the primordial Earth and are believed to have played a role, although perhaps minor because of their limited distribution, in the catalysis of the polymeric compounds from which life emerged. Bernal proposed that clays may have played a role in the early stages of prebiological evolution by adsorbing organic micromolecules and acting as the host for the reactants necessary for the formation of biologically important macromolecules, protecting these reactants from the destructive action of ultraviolet light, and catalyzing polymers that would become other catalysts [Rao et al., J. Mol. Evol. 15, 317 (1980), Ponnamperuma et al., Origins of Life 12, 9 (1982)].
Over the past decades we have measured the optical constants of a variety of materials over wide spectral ranges: tholins, HCN polymer, solid and liquid hydrocarbons, ovalbumin, horseradish peroxidase, DNA, amino acid bases, bacterial spores (B. cereus, B. subtilis, B. anthracis, E. herbicola), kerogens, Murchison meteorite, kaolinite, montmorillonite, and illite. Previously we presented results of our measurements the optical constants of illite from 0.2 to 2.5 micrometers. We have extended those measurements into the mid-IR to 25 micrometers using pressed pellets of illite in KBr. Our new optical constants in the IR will allow illite to be used as a material choice in modeling studies of dust in the Mars atmosphere, and of surfaces of outer Solar System bodies such as Phoebe and Iapetus where hydrated silicates are present.

Affiliated with

Also associated with

No associations

Rating

Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region 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 Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical Properties of Illite from 0.2 to 25 Microns: Extension into Mid-IR Region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-952888