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Ferberite

Type Locality
Niña Mine, Sierra Almagrera, Cuevas del Almanzora (Cuevas de Vera), Almería, Andalusia, Spain
Mineral Data
FeWO4
Strunz: 
4.DB.30
Physical Properties
Crystal System: 
Monoclinic
Hardness: 
4.0 - 4.5
Tenacity: 
brittle