Abstract
THE malachite green stain test has long been used as a means of identifying kaolinite, dickite, and nacrite1. The quantitative aspect has not been dealt with adequately, and the method has never been applied with discrimination. Working on mineral separates obtained during the physical analyses of clays and soils, I have used staining quite extensively. Previously identified specimens of kaolinite, beidellite, etc., were used as controls, and the following represents the general colour reactions, after staining, drying, and mounting such separates.
Similar content being viewed by others
Article PDF
References
Ross, C. S., and Kerr, P. F., U.S. Geol. Surv. Prof. Paper (1931).
Shand, S. J., Amer. Min., 24, 568–573 (1939).
Holmes, A., "Petrographic Methods and Calculations", p. 275 (1930).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
BOSAZZA, V. Adsorption of Malachite Green by Clays and Allied Minerals. Nature 146, 334 (1940). https://doi.org/10.1038/146334a0
Issue Date:
DOI: https://doi.org/10.1038/146334a0
This article is cited by
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.