Mineralogical characterization of the gold in a tail plant for its economical recovery
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Abstract
At the present our country works for obtaining the whole gold minerals in our plants, so the principal goal of this paper is to the characterization of gold minerals and its associations in a tail of an active gold plant. The attention is approached to know how the gold minerals are present, its purity, size and associations. Samples were taken from two sedimentation stages; the first 5 samples were taken in 2014 and last 5 samples in 2017. It was used for the investigation a set of advanced analytical techniques and it was possible to confirm the presence of coarse and fine free gold, as well as gold blocked in arsenopirite. Most of the gold appeared as native gold and a smaller quantity as electrum. There was also possible to see silver-gold particles of considerable size present in one of the samples. The gold average particles size was 441.7 um.
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