Garnier J., Quantin C., Guimaraes E., Becquer Thierry. (2008). Can chromite weathering be a source of Cr in soils ?. Mineralogical Magazine, 72 (1), p. 49-53. ISSN 0026-461X.
Titre du document
Can chromite weathering be a source of Cr in soils ?
Garnier J., Quantin C., Guimaraes E., Becquer Thierry
Source
Mineralogical Magazine, 2008,
72 (1), p. 49-53 ISSN 0026-461X
At Niquelandia, Cr extracted from the soil (5,000-9,300 mg.kg(-1)) is likely the result of the Cr-bearing Fe-oxides compared to the Cr-spinels, showing that low Cr-containing minerals present in the dunite (enstatite, olivine and clay minerals) have been completely dissolved. The chromites, accumulated inside soil profiles, have undergone chemical weathering, leading to a Cr enrichment during soil genesis. Traces of dissolution inside the soil chromites suggest that,they can be slowly weathered. In this case chromites could represent a diffuse source of available Cr(III) within the soil profiles.
