A mineral deposit is a useful substance concentrated in the ground. A rich mineral deposit, survey the mineral deposit, mineral deposits of copper.
What makes it a deposit rather than a curiosity is being concentrated enough to be worth digging up. The same phrase is used of the scale that builds inside a kettle.
1nounmineral depositA useful substance concentrated in the ground.
“The survey found a mineral deposit large enough to justify a mine.”
mineral deposit is a deposit.
Practised in Science & Space