Know beforehand charge is to include valuable minerals (7)
I believe the answer is:
foresee
'know beforehand' is the definition.
(I've seen this in another clue)
'charge is to include valuable minerals' is the wordplay.
'charge' becomes 'fee' (fee is a kind of charge).
'is to include' indicates putting letters inside.
'valuable minerals' becomes 'ores' (I've seen this in another clue).
'fee' placed around 'ores' is 'FORESEE'.
(Other definitions for foresee that I've seen before include "Imagine" , "To know beforehand" , "Predict" , "witness in advance?" , "Be aware of beforehand" .)