| Deutsch | English |
|---|---|
| Sprachgebrauch | usage |
| brauner Glaskopf | fibrous brown iron ore |
| brauner Glaskopf | limonite |
| roter Glaskopf | fibrous red iron ore |
| roter Glaskopf | wood haematite |
| roter Glaskopf | kidney ore |
| schwarzer Glaskopf | fibrous manganese oxide |
| schwarzer Glaskopf | pyrolarite |