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The decomposition and analysis of chrome spinel. A survey of some published techniques

Published online by Cambridge University Press:  05 July 2018

K. A. Rodgers
K. A. Rodgers*
Affiliation:
Geology Department, University of Auckland, New Zealand
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Summary

Examination of published procedures for the decomposition and subsequent analysis of chromite and chrome ores shows some to be unnecessarily complicated and time consuming. Others fail to yield consistent and reproducible results. Decomposition is rapidly and effectively accomplished using the peroxide frit technique of Rafter. Chromium may then be removed and determined volumetrically allowing the rest of the analysis to proceed along conventional silicate lines. Fe2+ is determined by oxidimetry following digestion with a mixture of phosphoric and sulphuric acids in the presence of ceric sulphate.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 299 , September 1972 , pp. 882 - 889
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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