Efficiency of rietveld-based xpd quantification of mineral abundance in granitic rocks, a case study | Szegedi Tudományegyetem, Ásványtani, Geokémiai és Kőzettani Tanszék

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Mai névnapok:

Emil, Csanád

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

Reference:
Acta Mineralogica-Petrographica, Szeged 2004, Vol. 45/1, pp. 49–53

Szerző:
A. Lovas György
Buda György

Abstract:
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 RIR 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 Rietveld- based 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 perthitic exsolution of K-feldspar and consequent inherent overestimation of the abundance of plagioclase.

 

Letöltés

 

acta2004, granitoid, phase analysis, Rietveld, XRD quantification

 

 




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