Efficiency of rietveld-based XPD quantification on mineral abundance in granitic rocks, a case study

The structure-sensitive and standardless phase quantification method based on a Rietveld analysis of X-ray powder diffraction data was compared to some traditional techniques. It was found that the Rietveld-based method is at least equal, in several cases superior to the R1R technique, and can be a...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Lovas György A.
Buda György
Dokumentumtípus: Cikk
Megjelent: Department of Mineralogy, Geochemistry and Petrology, University of Szeged Szeged 2004
Sorozat:Acta mineralogica-petrographica 45 No. 1
Acta mineralogica-petrographica : abstract series 45 No. 1
Kulcsszavak:Földtan, Ásványtan, Kőzettan
Tárgyszavak:
Online Access:http://acta.bibl.u-szeged.hu/25115
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520 3 |a The structure-sensitive and standardless phase quantification method based on a Rietveld analysis of X-ray powder diffraction data was compared to some traditional techniques. It was found that the Rietveld-based method is at least equal, in several cases superior to the R1R technique, and can be a fast and simple substitute for the optical modal analysis. At the same time it is shown that the points of a Rietveldbased rock classification, using the QAP rock classification of Streckeisen, can be erroneously shifted on the diagram towards the higher plagioclase containing types due to the pcrthitic exsolution of K-feldspar and consequent inherent overestimation of the abundance of plagioclase. 
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