Abstract
Capillary electrophoresis (CE) or capillary ion analysis (CIATM) represents a relatively new, simple and fast analytical technique suited in particular to the analysis of aqueous fluids and leach solutions. The mechanisms responsible for separation in CE are based on the ion charge/size ratios. The application of capillary electrophoresis to a number of key vein-forming minerals is described for the first time for a Precambrian orogenic gold deposit. The Omai deposit is situated in the north-central part of the Barama-Mazaruni Supergroup, Guiana Shield, a Paleoproterozoic granitoid-greenstone belt metamorphosed during the Trans-Amazonian tectonothermal event at ca. 2.1 Ga.
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