Estimating proportions in geochemical mixing equations by Chebyshev's method

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doi: 10.1016/S0883-2927(98)00027-4
Authors:Makinen, J.; Gustavsson, N.
Author Affiliations:Primary:
Geological Survey of Finland, Kuopio, Finland
Volume Title:Applied Geochemistry
Source:Applied Geochemistry, 14(1), p.85-90. Publisher: Pergamon, Oxford-New York-Beijing, International. ISSN: 0883-2927
Publication Date:1999
Note:In English. 11 refs.; illus., incl. 5 tables
Summary:A computer program was written for estimating components in a mixture by solving an overdetermined (i.e. more equations than unknowns) system of linear equations. The program was tested on two artificial mixes of 4 and 10 rock types, the computation being based on XRF analyses of the components and mixtures. The best solutions for the 4 and 10 rock mixes had errors of 4 and 8.5%, respectively, for the difference between the computed and true proportions of the different components in the mixtures. The program was also tested on glacial till from which the proportion of glacially ground rock types and sediments were estimated. Although it was not possible to know the 'correct' answer for this test, the results were geologically sensible. [M.E.H.]
Subjects:Clastic sediments; Computer programs; Data processing; Equations; Errors; Fines; Geochemistry; Mathematical methods; Mixing; Sediments; Spectra; Till; Variations; X-ray fluorescence spectra; Chebyshev's method
Abstract Numbers:99M/2793
Record ID:1999018811
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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