Original paper

Determination, par microréflectométrie diffuse, de la concentration en Co2+ tétraédrique dans les sphalérites

Cervelle, Bernard; Cesbron, Fabien; Drin, Nicolas

European Journal of Mineralogy Volume 1 Number 1 (1989), p. 127 - 134

12 references

published: Mar 21, 1989

DOI: 10.1127/ejm/01/1/0127

BibTeX file

ArtNo. ESP147050101015, Price: 29.00 €

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Abstract Diffuse reflectance (Rd) spectrometry in the visible spectrum under the microscope permits the rapid determination of trace amounts (not measurable with the electron microprobe) of four-fold coordinated Co2+ in powdered sphalerites with low iron contents (< 1 at.%). The relation between the remission function (f(r)) and the Co2+ content is linear, even for very low concentrations (- 10 ppm), where f(r) = (l-Rd)2/2Rd at 725 nm, after substraction of the background at 620 nm.


sphaleritecobaltdiffuse reflectancemicroscope