Co–Mn Mineralisations in the Ni Laterite Deposits of Loma Caribe (Dominican Republic) and Loma de Hierro (Venezuela)
نویسندگان
چکیده
Cobalt demand is increasing due to its key role in the transition clean energies. Although main Co ores are sediment-hosted stratiform copper deposits of Democratic Republic Congo, also a by-product Ni–Co laterite deposits, where extraction efficiency depends, among other factors, on correct identification Co-bearing minerals. In this paper, we reported detailed study mineralisation profiles Loma Caribe (Dominican Republic) and de Hierro (Venezuela). mainly associated with Mn-oxyhydroxide minerals, composition between Ni asbolane lithiophorite, although association phyllosilicates has been recorded deposit. Caribe, minerals developed colloform aggregates, globular spherulitic grains, while Hierro, they displayed banded colloform, fibrous or tabular textures. Most compositional analyses Mn-oxyhydroxides yielded 20 40 wt.% Mn, up 16 10 wt.%, respectively. both profiles, Mn-bearing were found from oxide horizon saprolite, as observed world, precipitation enhanced because pore solution saturation pH increase.
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ژورنال
عنوان ژورنال: Minerals
سال: 2022
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min12080927