Loved supplement impregnated with mineral (6)
I believe the answer is:
adored
'loved' is the definition.
(similar in meaning)
'supplement impregnated with mineral' is the wordplay.
I cannot quite understand how this works, but
'mineral' could be 'ore' (ore is a kind of mineral) and 'ore' is found in the answer.
'supplement' could be 'add' (I've seen this before) and 'add' is found in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for adored that I've seen before include "Doted on" , "Worshipped, loved" , "hugely popular" , "having lover" , "Worshipped and revered" .)