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Plumboferrite
Type Locality
Jakobsberg Mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden
Mineral Data
Pb
2
Fe
3+
11-x
Mn
2+
x
O
19-2x
, x = 1/3
Strunz:
4.CC.45
Physical Properties
Colour:
Blackish
Streak:
Red
Hardness:
5.0
