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"Deals with a small group of veinlike replacement deposits in fissures in Pliocene effusive rocks of the Cochinoca area, province of Jujuy, northwestern Argentina. The veins, of near-surface type, contain brecciated and banded ore, chiefly jujuyite, an iron antimonate, and highly antimoniferous opal. The minerals are of colloidal origin."
This record provided courtesy of AGI/GeoRef.
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