sodium metasomatism-related uranium occurrence of Aricheng South, Guyana Paul Alexandre Received: 15...Springer-Verlag 2010 Abstract The Aricheng South uranium occurrence is associated with Na metasomatism...that affected the granitoids of the Kurupung Batholith in western Guyana. The mineral paragenesis indicates...altered to secondary brannerite, zircon, and coffinite, respectively. Stable oxygen (chlorite, calcite)...and appear to be of magmatic origin. The Aricheng occurrence geochemically, mineralogically, thermally |