revision preference src: IOCG deposits tend to accumulate within iron-rich rocks such as banded iron formations, iron schists, etcetera. Iron enrichment of siliciclastic rocks by metasomatism is also recognised within some areas. <SEP> tgt: IOCG deposits tend to accumulate within iron-rich rocks such as banded iron formations, iron schists, etcetera, although iron enrichment of siliciclastic rocks by metasomatism is also recognised within some areas.