%0 Book Section
%T The relationship between large deep mafic sills, crustalcontamination and the formation of Ni-(Cu) and IOCG deposits
publisher SGA
%D 2011
%@ https://hdl.handle.net/20.500.14352/45454
%X The Ossa Morena Zone (SW Iberia) hosts an unusual suite of ore deposits, includingmagmatic Ni-(Cu) and IOCG mineralization. These deposits are interpreted to have a relationship toa deep mafic sill intruded in the middle crust. Interaction of mafic magmas with crustal rocks producedimmiscible sulphide-rich melts and water-rich melts. The latter exsolved large amounts ofFe- and CO2-rich brines that were responsible for widespread albite-actinolite alteration and IOCGmineralization.
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