RAPID, ACCURATE PHASE QUANTIFICATION OF CLAY-BEARING SAMPLES USING A POSITION-SENSITIVE X-RAY-DETECTOR

Citation
M. Batchelder et G. Cressey, RAPID, ACCURATE PHASE QUANTIFICATION OF CLAY-BEARING SAMPLES USING A POSITION-SENSITIVE X-RAY-DETECTOR, Clays and clay minerals, 46(2), 1998, pp. 183-194
Citations number
17
Categorie Soggetti
Agriculture Soil Science","Water Resources",Mineralogy
Journal title
ISSN journal
00098604
Volume
46
Issue
2
Year of publication
1998
Pages
183 - 194
Database
ISI
SICI code
0009-8604(1998)46:2<183:RAPQOC>2.0.ZU;2-8
Abstract
The rapid phase quantification method using X-ray diffraction (XRD) wi th a position-sensitive detector (PSD), outlined by Cressey and Schofi eld (1996), has been extended to facilitate mineral phase quantificati on of clay-bearing samples. In addition, correction factors for differ ences in matrix absorption effects have been calculated and applied. T ile method now enables mudrock mineralogy to be quantified rapidly and efficiently. Using this approach overcomes many of the problems hithe rto associated with the quantitative analysis of clay minerals, in par ticular the effects of preferred orientation of crystallites and varia ble sample-area irradiation, that make the task of quantification extr emely difficult by conventional Bragg-Brentano scanning diffractometry .