Mineral water at last stolen from room — it led to move (8)
I believe the answer is:
dolomite
'mineral' is the definition.
'water at last stolen from room it led to move' is the wordplay.
I cannot really understand how this works, but
'last' could be 't' (I've seen this in other clues) and 't' is found in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is present in the answer.
'move' could be 'do' (doing is a kind of moving) and 'do' is found in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for dolomite that I've seen before include "Mineral after which a range of Italian Alps is named" , "stone" , "Limestone rock" , "Form of rock" .)