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Chapmanite

Type Locality
Keeley-Frontier Mine (Canadian Keeley; Frontier Mine; Keeley Mine), South Lorrain Township, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada
Mineral Data
Fe3+2Sb3+(Si2O5)O3(OH)
Strunz: 
9.ED.25
Physical Properties
Hardness: 
2.5
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