Views mineral deposit as a blight (7)
I believe the answer is:
eyesore
'a blight' is the definition.
(I've seen this before)
'views mineral deposit' is the wordplay.
'views' becomes 'eyes' (I've seen this before).
'mineral deposit' becomes 'ore' (I've seen this before).
'eyes'+'ore'='EYESORE'
'as' is the link.
(Other definitions for eyesore that I've seen before include "it looks bad" , "It's offensively ugly" , "A monstrous carbuncle" , "Hideous building" , "Monstrosity" .)