| iron ore | 8.89 | There is no iron ore nearby. | ||
| uranium ore | 0.72 | Boardman had enclosed an egg-size rock containing uranium ore. | ||
| grade ore | 0.66 | The lower production resulted from lower grade gold ore. | ||
| bauxite ore | 0.53 | Bauxite ore is used in aluminum production. | ||
| vermiculite ore | 0.46 | But the primary form of asbestos at Libby is tremolite, which is a contaminant of the vermiculite ore. | ||
| nickel ore | 0.39 | Nickel ore is currently exported unrefined. |