Search
Menu
Home
Sources
About
Contacts
Janggunite
Janggunite
is a
rare
manganese oxide
mineral
with
formula
Mn
5−x
1+x
O
8
6
.
It was first described in
1975
for an
occurrence
in the Janggun
mine
, Bonghwa-gun,
Gyeongsangbuk-do
,
South Korea
and named for the
locality
.