Mineral analysis using X-ray powder data

Abstract

Quantitative X-ray powder diffractometry was applied to the phase analysis of a mineral specimen containing two sulfur-rich isomorphous mineral phases, beudantite [PbFe3(As04)-(so4)(0H),] and osarizawaite [PbFeA1C~(so~)~(oH),], together with goethite (FeOOH) and some hematite (Fez03). The application of the Rietveld method was extended to provide elemental as well as phase analysis.