Goethite
Goethite
Item-No.: 0300136 Price: 30.00 EUR
Pribram - Brezove Hory, CZ
| Synonyms: | Allcharite, Fullonite, Götheite, Göthite, Hydrohematite, Mesabite, Yanthosiderite |
| Classification: | Oxides and Hydroxides |
| Chemical formula: | α-Fe3+O(OH) |
| Crystal system: | Orthorhombic |
| Density (g/cm3): | 4,27 - 4,29 measured, 4,18 calculated |
| Tenacity: | Brittle |
| Cleavage: | Perfect on {010}, less perfect on {100} |
| Fracture: | Irregular/Uneven |
| Hardness (Mohs): | 5 - 5,5 |
| Colour: | Brownish black, yellow-brown, reddish brown |
| Lustre: | Adamantine, Silky, Metallic, Dull |
| Streak: | Yellowish brown, orange-yellow, ocher-yellow |
| Type locality: | Hollertszug Mine (Hollerter Zug Mine), Dermbach, Herdorf, Siegerland, Rhineland-Palatinate, Germany |
| Application: | Iron ore |