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Gormanite

Type Locality
Rapid Creek, Dawson Mining District, Yukon Territory, Canada
Mineral Data
(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6·2H2O
Strunz: 
8.DC.45
Physical Properties
Hardness: 
4.0 - 5.0
Tenacity: 
brittle