Go to Homepage
[Subject: Mining & Related Operations]
- In mining, the earthy, stony, saline, or combustible substance, worthless in itself, which contains the ore of a mineral deposit.
Translated in 32 languages
[Subject: Mineralogy]
- The portion of an ore which contains no metal; valueless minerals in a lode
Translated in 9 languages
[Subject: Geology, Meteorology, Hydrology]
Translated in 2 languages
Translated in 1 languages