کاربرد طیف‌سنجی غیرمخرب میکرورامان در مشخصه‌یابی گوهرسنگ‌های لاجورد، لعل، یاقوت، زمرد و گارنت افغانستان

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده فیزیک، دانشگاه یزد، یزد، ایران

چکیده

در این پژوهش، طیف‌سنجی میکرورامان به عنوان یک روش غیرمخرب و سریع برای شناسایی سنگ‌های قیمتی افغانستان همچون لاجورد، لعل، یاقوت، زمرد، و گارنت استفاده شد. افغانستان از مهمترین مراکز سنگ‌های قیمتی و نیمه‌قیمتی در جهان است و شناسایی سریع این نمونه‌ها به روش غیرمخرب اهمیت بسیاری دارد. نمونه‌ها از مناطق مختلف شامل بدخشان، پنجشیر، کابل و نورستان تهیه شدند. سپس طیف میکرورامان آنها ثبت و بررسی شد. قله‌های اصلی طیف رامان هر نمونه مشخص گردید. نتایج نشان می‌دهد که لاجورد، لعل، یاقوت، زمرد و گارنت به ترتیب دارای قله‌های اصلی در حدود 536، 4208، 4409، 4120، و cm-1 ۹۰۷ هستند. سرانجام برای مقایسه و اطمینان از نتایج، پراش پرتوی x (XRD) پودر نمونه­های گارنت، لعل و لاجورد که امکان خردایش آنها وجود داشت، بررسی شد. این نمونه‌ها از معدن مشخص در افغانستان به کمک طیف‌سنجی میکرورامان به سرعت قابل تشخیص هستند.

کلیدواژه‌ها

عنوان مقاله [English]

Application of non-destructive micro Raman spectroscopy in the characterization of lapis lazuli, lal, ruby, emerald, and garnet gemstones from Afghanistan

نویسندگان [English]

  • hamid motahari
  • Rahmatullah Andishmand
Department of Physics, Yazd University, Yazd, Iran
چکیده [English]

In this research, micro-Raman spectroscopy has been used for gemstone characterization as a non-destructive and fast method. Afghanistan9s Gemstones such as lapis lazuli, lal, ruby, emerald, and garnet have been used in this research. Afghanistan is one of the most important centers of gems in the world. Non-destructive identification of gems is so important. The samples were collected from different regions of Afghanistan including Badakhshan, Panjshir, Kabul and Nuristan. Then, their microRaman spectra were obtained and analyzed. The main peaks of the Raman spectrum of each sample were determined. Raman spectrum results show that lapis lazuli, lal, ruby, emerald, and garnet have main peaks in the range of 536cm-1, 4208cm-1, 4409cm-1, 4120cm-1, and 907cm-1, respectively. At the end, to compare and confirm the results, XRD characterization of the garnet sample powder, which was possible to crush, was performed. Finally, it can be concluded that the above-mentioned gems can be characterize by micro-Raman spectroscopy, rapidly.
 

کلیدواژه‌ها [English]

  • Gemstone
  • Afghanistan
  • Raman Spectroscopy
  • Emerald
  • Ruby
  • Garnet Almandine
  • Lapis Lazuli

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  • تاریخ دریافت: 25 مهر 1402
  • تاریخ بازنگری: 26 آذر 1402
  • تاریخ پذیرش: 20 دی 1402

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