|Raman spectra of four samples of lunar soil
"fines": 67511, an immature, plagioclase-rich highland soil
from near North Ray Crater showing a mild fluorescence across most of the spectrum; 71501,
a submature mare soil from the Taurus-Littrow Valley; 76501, a
submature, mixed mare-highland soil from the base of the North Massif; and 73241,
an immature highland soil from the landslide area near South Massif.
||Raman spectra of lithic fragments from sample 67513
and 76503. The white lithic fragment consists essentially of plagioclase.
That mineral dominates the spectrum of the companion breccia fragment which, despite its
fine-grained nature, shows both plagioclase and small olivine peaks. Plagioclase and
pyroxene peaks of roughly equal height are seen in mare basalt fragment 76503,7045, and
fluorescence produces a rising background with increasing wavenumber, as in 67511. The
upper 76503,7030 composite spectrum contains all the individual spectra obtained on that
breccia fragment, including some individual spectra dominated by plagioclase clasts, and
the lower spectrum is a composite of two spectra that are mainly of the
||Raman spectra of glassy materials show broad and weak
spectral bands. The central frequencies of these bands are related to the degree of
polymer- ization of the silicate glass structures.