Micro-Raman spectroscopy as a routine tool for garnet analysis

被引：95

作者：

Bersani, Danilo ^{[1
]}

Ando, Sergio ^{[2
]}

Vignola, Pietro ^{[3
]}

Moltiflori, Gaia ^{[2
]}

Marino, Iari-Gabriel ^{[1
]}

Lottici, Pier Paolo ^{[1
]}

Diella, Valeria ^{[3
]}

机构：

[1] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy

[2] Univ Milano Bicocca, Dipartimento Sci Geol & Geotecnol, I-20126 Milan, Italy

[3] IDPA, CNR, Natl Res Council, I-20131 Milan, Italy

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2009年 / 73卷 / 03期

关键词：

Micro-Raman; EDS electron microprobe; WDS electron microprobe; Garnets; SILICATE GARNETS; SPECTRUM; MICROSPECTROMETRY; UVAROVITE; X3Y2Z3O12; PYROPE;

D O I：

10.1016/j.saa.2008.11.033

中图分类号：

O433 [光谱学];

学科分类号：

070207 [光学];

摘要：

A rapid system to obtain molar compositions of minerals belonging to the garnet group by means of Raman spectroscopy is illustrated here. A series of standard garnets, whose composition was determined by means of Wavelength Dispersive System (WDS) electron microprobe measurements, was used to correlate the wavenumbers of the different Raman peaks with chemical composition. A simple software routine was then developed in order to obtain garnet molar composition starting from the Raman spectrum, based on the assumption that in a solid solution belonging to the garnet family the Raman wavenumbers are linear combinations of end member wavenumbers, weighted by their molar fraction. The choice of the Raman bands used for the calculations and their behaviour are also discussed. The method, called MIRAGEM (Micro-Raman Garnets Evaluation Method), was then tested on a second series of garnets with satisfactory results. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：484 / 491

页数：8

共 19 条

[1]

Raman spectroscopy as an effective tool for high-resolution heavy-mineral analysis: Examples from major Himalayan and Alpine fluvio-deltaic systems [J].