I have a Raman spectra showing peak at 637cm-1 (610-640) from a fossil. Wondering what could this be?

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Jürgen Wintner

Take a look at this site:

Handbook of Minerals Raman Spectra (ENS-Lyon): http://www.ens-lyon.fr/LST/Raman/

Mineral Raman Database (University of Parma): http://www.fis.unipr.it/phevix/ramandb.php

Raman Spectra Database (Geofluids Lab Siena University): http://www.dst.unisi.it/geofluids/raman/spectrum_frame.htm

Raman Spectra Database of Minerals and Inorganic Materials (RASMIN) (Ceramics Inst. AIST): http://riodb.ibase.aist.go.jp/rasmin/E_index.html

Raman Spectra of Carbohydrates (Royal Vet. & Agric. Univ.): http://www.models.kvl.dk/specarb

Neil Law

I'll add "Theory of Normal Vibrations" by Kazuo Nakamoto.

Timothy D. Huang

Thanks, both of you.

Most of the websites provide the mineral to spectra. However, I need to find what could be the peak 637cm-1 (610-640). Thanks again.