Abstract
THE resistant nature of chromite to all the usual etching reagents used in polished section examination is well known. Etch patterns on chromite would assist in the determination of the orientation of interlocking and anhedral grains in a rock and in the recognition of zoning. A search for a suitable reagent has revealed that chromite can be etched by treatment with concentrated perchloric acid, which is not mentioned in standard works on mineragraphy.
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FRANKEL, J. Etching Reagent for Chromite. Nature 146, 198–199 (1940). https://doi.org/10.1038/146198b0
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DOI: https://doi.org/10.1038/146198b0
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