Thermal evolution of Andean iron oxide-apatite (IOA) deposits as revealed by magnetite thermometry.

ABSTRACT: Magnetite is the main constituent of iron oxide-apatite (IOA) deposits, which are a globally important source of Fe and other elements such as P and REE, critical for modern technologies. Geochemical studies of magnetite from IOA deposits have provided key insights into the ore-forming processes and source of mineralizing fluids. However, to date, only qualitative estimations have been obtained for one of the key controlling physico-chemical parameters, i.e., the temperature of magnetite formation. Here we reconstruct the thermal evolution of Andean IOA deposits by using magnetite thermometry. Our study comprised a > 3000 point geochemical dataset of magnetite from several IOA deposits within the Early Cretaceous Chilean Iron Belt, as well as from the Pliocene El Laco IOA deposit in the Ch

SUBMITTER: Palma G 

PROVIDER: S-EPMC8445919 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature