Using a Raman (Gem Ram) operating with a laser calibrated at 785 nm, I attempted to determinate the nature of an unknown material disposed on certain places at the surfaces of a rough beryl crystal, variety Heliodor. This is the spectrum that I obtained. Is anyone could have an idea about what it could be ? Using different Raman databases I have not been able to identified this material.
Top of my head - I don't know. A metal oxide is a possibility - MoS2 has a similar doublet of peaks at ~380 and 410 cm-1.
This cant be MoS2 because both peaks are higher than 400 cm-1. You should do XPS of this material. You will get an atomic ratio from XPS results and then compare the Raman spectrum with the literature values of that compound.
Talha Nisar I was not suggesting it was MoS2 - but just using it as an example which has a similar spectrum.
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