Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy

Details Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy

Mar 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996lpi....27..613j&link_type=abstract

Lunar and Planetary Science, volume 27, page 613

Computer Science

1

Crystals: Structure, Moon: Mineralogy, Phosphates, Raman Spectroscopy, Whitlockite

Scientific paper

Raman spectra are sensitive to the structural and chemical characteristics of the phosphate mineral whitlockite. The number and specific frequency of the Raman bands in the 970 Delta cm^-1 spectral region caused by the nu(sub)1 symmetric stretching mode within the (PO4)^3- tetrahedra differ for REE-rich whitlockite (single, asymmetric band), REE-poor Ca- or Na-whitlockite (doublet), and terrestrial H-containing whitlockite (doublet). The presence of (HPO4)^2- groups in the latter produces a third nu(sub)1 band at 923 Delta cm^-1. Based on the Raman spectra of lunar, meteoritic, synthetic, and terrestrial whitlockite, we conclude that the incorporation of REE in REE-rich whitlockite (for which there is currently no X-ray structural refinement) causes a significant change to the structure compared to both meteoritic and terrestrial whitlockite. In addition, we can distinguish between high and low REE concentrations in whitlockite grains. All of this information can be obtained non-destructively, in-situ in grains as small as 3 micrometers (in loose rock fragments or in prepared sections) with a laser Raman microprobe.

Affiliated with

Also associated with

No associations

Rating

Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy 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 Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Structural Comparison of Lunar, Terrestrial, and Synthetic Whitlockite Using Laser Raman Microprobe Spectroscopy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1612698