Öz

The detailed nomenclature and descriptions of the minerals can be made with the aid of a polarizing microscope on the thin section and by powdering with the X-Ray Diffraction (XRD) method. In both methods, minerals are damaged and require serious knowledge and experience. In Raman spectroscopy without any destruction of the sample, the spectra formed as a result of differences in the wavelength of the scattered light compared to the wavelength of the light that interacts with the molecule by being sent on the mineral can reflect the identity of the mineral. The spectra, which consist of the molecular composition difference of each mineral, can also reflect the changes of the measured mineral. Furthermore, in addition to mineral naming, fresh and altered mineral differences are also distinguished by this method. In this study, Raman spectroscopic definitions of plagioclase, orthoclase, anorthoclase, biotite, phlogopite and garnet minerals were made using the Raman spectroscopy method and comments were made on the origin of the rock from which they were formed. Thus, the determination of the types of minerals by non-destructive analysis method has been demonstrated with examples.

Anahtar Kelimeler

• Raman Spectroscopy
• Wavelength
• Mineralogy
• Analysis method

Raman Spektroskopisinin İlkeleri ve Mineral Tanımlamalarında Kullanılması

Öz

Minerallerin ayrıntılı olarak adlandırmaları ve tanımlamaları ince kesit üzerinde polarizan mikroskop yardımı ile ve toz hale getirilerek X-Işını Kırınımı (XRD) yöntemi ile yapılabilmektedir. Her iki yöntemde mineraller üzerinde tahribat yapılmakta ve ciddi bir bilgi birikimi ve deneyim gerektirmektedir. Raman spektroskopisinde örnek üzerinde herhangi bir tahribat yapmadan, mineral üzerine gönderilerek molekül ile etkileşime giren ışığın dalga boyuna göre saçılan ışığın dalga boyundaki farklar sonucu oluşan spektrumlar, mineralin kimliğini yansıtabilmektedir. Her mineralin moleküler bileşim farklılığından oluşan spektrumlar yardımıyla mineral içerisindeki değişimler ölçülebilmektedir. Böylece mineral adlandırmanın yanında taze ve bozunmuş mineral farklılıkları da bu yöntem ile ayırt edilmektedir. Bu çalışmada Raman spektroskopi yöntemini kullanarak plajiyoklaz, ortoklaz, anortoklaz, biyotit, filogopit ve granat minerallerinin Raman spektroskopik tanımlanmaları yapılmış ve oluştukları kayanın kökeni hakkında yorumlar yapılmıştır. Böylece minerallerin tahribatsız analiz yöntemi ile türlerinin tespiti örneklerle ortaya konulmuştur.

Anahtar Kelimeler

• Raman Spektroskopisi
• Dalga boyu
• Mineraloji
• Analiz yöntemi

Kaynakça

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