کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9757006 | 1495290 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Raman spectroscopy of the mineral rhodonite
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The mineral rhodonite an orthosilicate has been characterised by Raman spectroscopy. The Raman spectra of three rhodonites from Broken Hill, Pachapaqui and Franklin were compared and found to be similar. The spectra are characterised by an intense band at around 1000 cmâ1 assigned to the ν1 symmetric stretching mode and three bands at 989, 974 and 936 cmâ1 assigned to the ν3 antisymmetric stretching modes of the SiO4 units. An intense band at around 667 cmâ1 was assigned to the ν4 bending mode and showed additional bands exhibiting loss of degeneracy of the SiO4 units. The low wave number region of rhodonite is complex. A strong band at 421.9 cmâ1 is attributed to the ν2 bending mode. The spectra of the three rhodonite mineral samples are similar but subtle differences are observed. It is proposed that these differences depend upon the cationic substitution of Mn by Ca and/or Fe2+ and Mg.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 62, Issues 1â3, November 2005, Pages 171-175
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 62, Issues 1â3, November 2005, Pages 171-175
نویسندگان
Stuart J. Mills, Ray L. Frost, J. Theo Kloprogge, Matt L. Weier,