Coronadite Group

coronadite

The coronadite group includes:

coronadite: Pb(Mn4+6Mn3+2)O16
cryptomelane: K(Mn4+7Mn3+)O16
hollandite: Ba(Mn4+6Mn3+2)O16
manjiroite: Na(Mn4+7Mn3+)O16
thalliomelane: Tl(Mn4+7.5Cu2+0.5)O16

The coronadite group is a member of the hollandite supergroup.

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