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Franklinfurnaceite
Type Locality
Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Mineral Data
Ca
2
Fe
3+
Mn
2+
3
Mn
3+
(Zn
2
Si
2
O
10
)(OH)
8
Strunz:
9.EC.55
Physical Properties
Hardness:
3.0
Tenacity:
very brittle
