New land area provides iridescent material (5)
I believe the answer is:
'iridescent material' is the definition.
'nacre' can be an answer for 'material' (nacre is a kind of material). I am unsure of the 'iridescent' bit.
'new land area' is the wordplay.
'new' becomes 'n'.
'land area' becomes 'acre' (I've seen this before).
'provides' acts as a link.
Can you help me to learn more?
(Other definitions for nacre that I've seen before include "Pearl's mum" , "Mother of pearl" , "Constituent of inlay furniture" , "Mother-of-pearl - crane (anag)" , "valuable material" .)