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Scanning time-resolved standoff Raman instrument for large-area mineral detection on planetary surfaces

Shiv K. Sharma, John N. Porter, Anupam K. Misra, Charles E. Helsley and David E. Bates
Scanning time-resolved standoff Raman instrument for large-area mineral detection on planetary surfaces (in Geo-Raman X, Jean Dubessy (editor))
European Journal of Mineralogy (December 2013) 25 (5): 715-720

Abstract

A Scanning Standoff Raman Spectroscopy (SSTRS) system has been developed to map out the spatial distributions of selected minerals at long distances (10-100 m). The SSTRS is based on a standoff Raman system, which is mounted inside a custom pan and tilt scanner. Computer software is used to control the direction of the pan-tilt scanner and to point the laser beam onto the distant samples. Measurements are made in an x-y grid pattern on a target area defined by the user. The Raman spectra collected at each grid point are processed to identify the distribution of minerals present from their respective Raman fingerprints. In the initial experiment, the Raman spectra of barite (BaSO (sub 4) ), gypsum (CaSO (sub 4) .2H (sub 2) O), plagioclase feldspar (solid solution of NaAlSi (sub 3) O (sub 8) -CaAl (sub 2) Si (sub 2) O (sub 8) ), alpha -quartz (alpha -SiO (sub 2) ) rocks, and silica glass were measured at 30 m distance. The Raman spectra at the grid points are measured and processed to obtain a Raman mineral image of the distant minerals by selecting respective Raman fingerprints of alpha -quartz, gypsum and plagioclase feldspar. The ability to provide interpolated Raman images of distant mineral species is illustrated. The new SSTRS system works well and now offers the ability to obtain spatial distribution maps of distant mineral species from their Raman fingerprints.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 25
Serial Issue: 5
Title: Scanning time-resolved standoff Raman instrument for large-area mineral detection on planetary surfaces
Title: Geo-Raman X
Affiliation: University of Hawaii, Hawaii Institute of Geophysics and Planetology, Honolulu, HI, United States
Affiliation: Universite de Lorraine, Nancy, France
Pages: 715-720
Published: 201312
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
Meeting name: 10th Geo-Raman meeting
Meeting location: Nancy, FRA, France
Meeting date: 20120611June 11-13, 2012
References: 23
Accession Number: 2014-004511
Categories: General geochemistry
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus.
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201404
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