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Application of Automated X-Ray Diffraction to Alteration Mineral Zoning Studies

Published online by Cambridge University Press:  06 March 2019

H. Salek ,
H. A. Vincent  and
L. Thorpe
H. Salek
Affiliation:
Anaconda Copper Company P. O. Box 27007 Tucson, Arizona 85726
H. A. Vincent
Affiliation:
Anaconda Copper Company P. O. Box 27007 Tucson, Arizona 85726
L. Thorpe
Affiliation:
Anaconda Copper Company P. O. Box 27007 Tucson, Arizona 85726
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Abstract

The purpose of this study was to develop a quick and valid X-ray method to determine the alteration models for acidic and intermediate type of altered rocks. Four alteration minerals--alunite, kaolinite, montmorillonite, and sericite--and total quartz in certain altered porphyritic rocks were determined and evaluated by using the APD (Automatic Powder Diffractometer) system with external standard methods.

The findings indicate that the APD system can successfully be used in the quantitative analysis of these five mineral phases. The best results are obtained from samples with low iron minerals and of a grain size not coarser than 325 mesh.

Type
VIII. XRD Applications
Information
Advances in X-Ray Analysis , Volume 25: Thirtieth Annual Conference on Applications of X-ray Analysis, August 3-7, 1981 , 1981 , pp. 373 - 378
Copyright
Copyright © International Centre for Diffraction Data 1981

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