Answer:
Some are brought to the surface through mining, some are brought to the surface through earth processes like faulting, folding, or volcanic eruptions.
Step-by-step explanation:
Some minerals, although initially formed deep underground, are brought to the surface via natural occurrences -- namely volcanic eruptions and other geological processes such as the faulting or folding of rock layers. Diamonds are one example of a mineral brought to the surface in this manner.