Vibrational spectra of the alkaline earth double carbonates

Publication

Reference: Scheetz Barry E., White William B. (1977). Vibrational spectra of the alkaline earth double carbonates. Am. Mineral., 62, 36 - 50.

Names

Title: Vibrational spectra of the alkaline earth double carbonates
Abstract: Raman spectra and mid-range and far infrared spectra have been measured on polycrystalline norsethite [$BaMg(CO_3)_2$], barytocalcite [$BaCa(CO_3)_2$], the high-temperature modification of barytocalcite, huntite [$CaMg3(CO_3)_4$], benstonite [$Ca_7Ba_6(CO_3)_{13}$], and alstonite [$CaBa(CO_3)_2$]. Factor-group calculations permit the assignment of the internal modes of the known structures. Effects of ordering in these derivative structures appear mainly in the IR spectra. A degree of translational disorder in the high-temperature modification of barytocalcite and in alstonite appears as a line broadening of the symmetric stretching mode in the Raman spectra.
Keywords: Infrared spectroscopy, transmission spectra, Infrared spectra, absorption, Raman spectra, mid-IR, far-IR, X-ray diffraction, data analysis, vibration theory, band position, band mode assignement, high temperature, phase change, mineral, carbonate, calcite, dolomite, alstonite, huntite, norsethite, barytocalcite, benstonite, witherite, BaMg(CO3)2, BaCa(CO3)3, CaMg3(CO3)4, Ca7Ba6(CO3)13, CaBa(CO3)2, Ca, Mg, Ba, CO3, earth
Content: spectral data, band list data, sample

Identifiers