Akademik Veri Yönetim Sistemi
11th INTERNATIONAL BLACK SEA COASTLINE COUNTRIES SCIENTIFIC RESEARCH CONFERENCE, Samsun, Türkiye, 9 - 10 Mart 2025, ss.415-419, (Tam Metin Bildiri)
Quartz
is an essential mineral of rock-forming component of the earth. It appears in
different colours depending on the trace element content and with different
shapes due to their highly variable chemical structure. This study aims to
determine the Raman characteristics of different quartz minerals depending on
their colour changes, detected by Confocal Raman Spectrometry (CRS).
This study performed Raman measurements on the five
different quartz samples. These are Smoky Quartz, Rose Quartz, Citrine, Pure
transparent Crystal and Amethyst. The Raman spectra were recorded in the range
of 100–1000 cm⁻¹, focusing on characteristic vibrational modes associated with
quartz structure.
The Raman spectrum of quartz typically shows
prominent Raman peaks at certain Raman shift wavelengths, these are around 464
cm-1 (Si-O symmetric stretching mode) and 798 cm-1 (Si-O
bending mode). The obtained Raman spectra, the main 6 Raman peaks of
quartz minerals can be continuity detected around 134 cm-1, 211 cm-1, 270 cm-1, 360 cm-1,
400 cm-1 and 470 cm-1.
When the Confocal Raman spectra of Citrine and Pure transparent Crystal were examined, the presence of another peak around 515 cm-1 shift, which was not present in the other samples, was detected. Confocal Raman Spectrometry of Pure transparent Crystal, can be identified as Carnelian, which is a distinct microcrystalline quartz variety. The results of this study reveal that variations in Raman shift wavelengths provide a reliable approach to identifying different quartz types and their compositional differences. With the help of Confocal Raman Spectrometer, different colors of quartz can be identified using minor peaks of Raman spectra.