Mine discovery (3)

I believe the answer is:

ore

'mine discovery' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for ore that I've seen before include "Danish currency" , "Naturally occurring mineral" , "Mineral aggregate" , "Mineral - Scandinavian money" , "It's mined for minerals" .)

I've seen this clue in The New York Times.

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