6.1.2. Manganese deposits
Mndepositmodels in rift-related environments include volcanogenic
and detachment-fault-related epithermal deposits. Volcanogenic Mn
mineralization is associated to hot spring activity in oceanic environments
(Mosier and Page, 1988) or associated to syn-rift and late rift sequences
in restricted marine environments (Zappettini et al., 2012).