A place yielding mineral resources could be topical (7)

I believe the answer is:

coalpit

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'a place yielding mineral resources' is the definition.
I can't tell whether this defines the answer.

'could be topical' is the wordplay.
'could be' is an anagram indicator.
'topical' with letters rearranged gives 'COALPIT'.

Can you help me to learn more?

(Another definition for coalpit that I've seen is " mine".)

I've seen this clue in The Irish News.

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