Workshop – Raman spectroscopy and its role in the new mineral characterization


Raman spectroscopy is considered one of the best non-destructive techniques, as it provides a fingerprint of the mineral studied. In general, Raman can deal with small amounts of material with no previous preparation. The development of a new generation of solid-state lasers and spectrometers has increased the Raman spectroscopy accessibility. The International Mineralogical Association (IMA) has approved approximately 100 new minerals per year and, due to the rarity of the samples, Raman spectroscopy has frequently played an important role in their characterization. Another advantage is many characteristic spectra are provided for free in databases, as the RRUFF project from the University of Arizona, for mineral collectors and the scientific community. However, the band assignment is tricky and the spectra must be carefully compared with databases. During the workshop, we will present some theoretical aspects of vibrational analysis and methods for band assignments, such as factor group analysis and correlation method. The use of Raman databases will also be explored for the identification of minerals. Finally, we will investigate the role of Raman spectroscopy in the most recent characterization of new mineral species.

 

Workshop convenor

Marcelo Andrade (Brazil)

About the workshop convenor

Marcelo B Andrade was born in Sao Paulo, Brazil on February 22, 1973. He is a Research Associate at the University of Arizona and reponsible for the project: Center of Characterization of New Mineral Species at Sao Carlos Institute of Physics, University of Sao Paulo, Brazil. His research focuses on the search and characterisation of rare and new mineral species. He uses Raman spectroscopy, X-ray diffraction and electron microprobe as analytical techniques. His articles published include 11 descriptions and characterizations of new mineral species [parisite-(La), melcherite, kenoplumbomicrolite, hydroxycalciomicrolite, waimirite-Y, fluorlamprophyllite, fluorcalcioroméite, raygrantite, pauloabibite, fluorcalciomicrolite and hydrokenomicrolite).

Why are you excited about participating in IMA2018?:
It is wonderful to meet the best specialists in mineral characterization of the world. Also, it is an opportunity to explore and share the knowledge of using Raman Spectroscopy in mineralogy.

 

Co-Convenors

Sherif Kharbish (Egypt)