Geochemical signatures of the Neoarchean and Paleoproterozoic copper systems in the Carajás Mineral Province, NW Brazil: Implications for metal endowment
The main copper deposits of the Carajás Mineral Province are grouped into: i) iron oxide-copper-gold (IOCG), and ii) granite-related Cu-Au. They were formed during multiple mineralizing events in the Neoarchean (ca. 2.7; ca. 2.5 Ga) and Paleoproterozoic (ca. 2.1; ca. 1.8 Ga). A combination of non-composition and composition data analysis, molar element ratio, and principal component analysis using a lithogeochemical dataset (n = 1040) has been applied to recognize geochemical associations in these deposits.