2009: Textural Relations and Minerals Compositions of Garnierite Ores Using X-Ray Images

Textural Relations and Minerals Compositions of Garnierite Ores Using X-Ray Images

Abstract

“Garnierites” are significant ore minerals in the saprolitic horizons of Falcondo nickel laterite deposits in the Dominican Republic. The garnierite mineralization mainly occurs as millimetric to centimetric-thick veins. Other occurrences include tension fracturefillings, anastomizing veins, boxwork fabric, coatings on joints, often displaying slickensides and breccias (Proenza et al., 2008). These authors have concluded that Falcondo garnierite ores consist of fine-grained mixture of three solid solutions: (i) lizarditenepouite, (ii) talc-willemseite, and (iii) sepiolite-falcondoite. However, the garnierite ores are compositionally variable on a fine scale and exhibit heterogeneous textures. In this study, using X-ray images, we provide new data on textural relations and mineral compositions of garnierites ores from Falcondo Ni lateritic profile (Central Dominican Republic). 

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To Cite this article: Proenza, J. A., García-Casco, A., Lewis, J.F., Galí, S., Tauler, E., Labrador, M., Longo, F. (2009): Textural Relations and Minerals Compositions of Garnierite Ores Using X-Ray Images. Macla, 11, 155-156. http://www.ehu.es/sem/macla_pdf/macla11/Macla11_155.pdf

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