Put back mineral after break (7)
I believe the answer is:
restore
'put back' is the definition.
(I've seen this before)
'mineral after break' is the wordplay.
'mineral' becomes 'ore' (ore is a kind of mineral).
'after' is a charade indicator (letters next to each other).
'break' becomes 'rest' (a rest is taking a break).
'ore' put after 'rest' is 'RESTORE'.
(Other definitions for restore that I've seen before include "Bring back to health" , "Renew, repair; give back" , "Build up again" , "Make good, reinstate" , "hand it back?" .)