One of the first things discussed in an Introduction to Mining course and one which students must commit to memory is the definition of ‘ore’. One of the more common definitions (USBM, 1967) is given below:
Ore: A metalliferous mineral, or an aggregate of metalliferous minerals, more or less mixed with gangue which from the standpoint of the miner can be mined at a profit or, from the standpoint of a metallurgist can be treated at a profit.