Examlex
Write the word or phrase that best completes each statement or answers the question.
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Mineral Deposit
A natural accumulation of minerals in quantities sufficient for economic extraction.
Younger Sediments
Sediment layers that have been deposited more recently over older layers in the geological strata.
Black Smokers
Hydrothermal vents on the seafloor that emit clouds of black material, rich in minerals like sulfides.
Copper Deposits
Concentrations of copper within the Earth that can be mined for economic value.
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