 |
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| magnetite (min.); magnetic iron ore (min.); loadstone (min., min.) | |||
| magnetite | |||
| magnetic iron (ore); black oxide of iron | |||
| black iron ore; lodestone | |||
| |||
| magnetic iron oxide; ferroso-ferric oxide; magnetite (min.) | |||
| magnétite: 8 phrases in 6 subjects |
| Agriculture | 1 |
| Chemistry | 2 |
| Coal | 1 |
| Mechanic engineering | 1 |
| Metallurgy | 1 |
| Nuclear physics | 2 |