Ferberite, Wolframite Group
Siderite, Ferberite (Wolframite)
Item-No.: MIN0156 Price: 480.00 EUR
Panasqueira Mine - Couto Mineiro da Panasqueira, Panasqueira, Covilhã, Castelo Branco District, Portugal
Wolframite, Zinnwaldite
Item-No.: MIN0159 Price: 130.00 EUR
Cínovec , Krušné Hory Mts, Ústí Region (Bohemia), Czech Republic
| Synonyms: | Ferrotungstate, Iron Tungstate, |
| Classification: | Oxides, Wolframite Group, Ferberite-Hübnerite Series |
| Chemical formula: | FeWO4 |
| Crystal system: | Monoclinic |
| Density (g/cm3): | 7,58 measured, 7,6 calculated |
| Tenacity: | Brittle |
| Cleavage: | Perfect on {010} |
| Fracture: | Irregular/Uneven |
| Hardness (Mohs): | 4 - 4,5 |
| Colour: | Black |
| Lustre: | Adamantine, Metallic, Sub-Metallic |
| Streak: | Brownish black to black |
| Type locality: | Niña Mine, Sierra Almagrera, Cuevas del Almanzora (Cuevas de Vera), Almería, Andalusia, Spain |
| Application: | Important ore of tungsten |