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Synadelphite
Type Locality
Moss mine, Nordmark (Nordmarksberg), Filipstad, Värmland, Sweden
Mineral Data
Mn
2+
9
(As
5+
O
4
)
2
(As
3+
O
3
)(OH)
9
·2H
2
O
Strunz:
8.BE.50
Physical Properties
Crystal System:
Orthorhombic
Hardness:
4.5
Tenacity:
brittle
