Confusion finding gold in abundance (6)
I believe the answer is:
morass
'confusion' is the definition.
(I've seen this before)
'gold in abundance' is the wordplay.
'gold' becomes 'or' ('or' is the heraldic name for gold).
'in' means one lot of letters goes inside another.
'abundance' becomes 'mass'.
'or' put into 'mass' is 'MORASS'.
'finding' is the link.
(Other definitions for morass that I've seen before include "Swampy, low-lying land" , "mess" , "Mire, quagmire" , "Tract of soft, wet ground" , "dangerous situation" .)