Mineral from mound cur removed (8)
I believe the answer is:
corundum
'mineral' is the definition.
(I know that corundum is a type of mineral)
'mound cur removed' is the wordplay.
'removed' indicates anagramming the letters (the letters must be move again or be re-moved).
'mound'+'cur'='moundcur'
'moundcur' with letters rearranged gives 'CORUNDUM'.
'from' is the link.
(Other definitions for corundum that I've seen before include "Hard form of alumina" , "Extremely hard mineral used as an abrasive" , "Stone" , "Abrasive form of alumina" .)