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Katoptrite
Type Locality
Brattfors Mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden
Mineral Data
(Mn
2+
,Mg)
13
(Al,Fe
3+
)
4
Sb
5+
2
(SiO
4
)
2
O
20
Strunz:
9.AE.40
Physical Properties
Streak:
red brown
Hardness:
5.5
Tenacity:
brittle
