Browsing ELibrary by Subject "optical spectra"

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OPTICAL AND NEAR INFRARED SPECTRA OF RINGWOODITE TO 21.5 GPA: IMPLICATIONS FOR RADIATIVE HEAT TRANSPORT IN THE MANTLE

Keppler H.; Smyth J.R. (2005)

High pressure optical and near infrared spectra of a single crystal of ringwoodite with composition (Mg0.90Fe0.10) 2SiO4 were measured to 21.5 GPa. The spectrum at ambient pressure shows a strong band at 12 265 cm-1 with ...
OPTICAL SPECTROSCOPIC STUDY OF TUHUALITE AND A RE-EXAMINATION OF THE BERYL, CORDIERITE, AND OSUMILITE SPECTRA

Taran M.N.; Rossman G.R. (2001)

Polarized optical absorption spectra of a rare Fe2+, Fe3+-bearing silicate mineral, tuhualite, (Na,K)2Fe22+Fe23+Si12O30, were measured at room temperature in the range 350–4000 nm (ca. 28500–2500 cm–1). The spectra display ...

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