Wood and mineral on the beach? (6)
I believe the answer is:
ashore
'on the beach?' is the definition.
(I've seen this before)
'wood and mineral' is the wordplay.
'wood' becomes 'ash' (wood from an ash tree).
'and' says to put letters next to each other.
'mineral' becomes 'ore' (ore is a kind of mineral).
'ash'+'ore'='ASHORE'
(Other definitions for ashore that I've seen before include "Aground" , "Off the boat" , "Hoarse being no longer at sea" , "Hoarse (anag)" , "Returned to land" .)