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Database of Standard Raman Spectra of Minerals and Related Inorganic Crystals

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Abstract:

Establishing a standard Raman spectral database for minerals and related inorganic crystals is a very important basis for further increasing the applications of Raman spectroscopy in the geosciences. However, the Raman spectral pattern of a crystal is a function not only of its composition and structure but also of the scattering geometry during the measurement. Therefore, the standard Raman spectrum of a crystal must be measured under well-defined standard conditions. It would be of great interest to establish a standard measuring configuration with which the characteristic Raman spectra of all mineral crystals could be obtained. Factor-group analysis of the main types of minerals indicates that almost all of them possess a Raman-active totally symmetric (TS) vibrational mode. Therefore, we propose a scheme to measure standard Raman spectra under a scattering geometry set up on the basis of these TS modes. Using this scheme, we were able to establish a database for standard Raman spectra of minerals and related inorganic crystals.

Keywords: Database; Minerals and inorganic crystals; Raman spectroscopy

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702944029640

Affiliations: 1: Chinese Academy of Geological Sciences, Beijing 100037, People's Republic of China; current address: Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130-4899 2: Chinese Academy of Geological Sciences, Beijing 100037, People's Republic of China 3: Department of Chemistry, QingHua University, Beijing 100084, People's Republic of China

Publication date: August 1, 1994

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