"Be a Gold-digger": an American brochure (10)

I believe the answer is:

prospectus

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'brochure' is the definition.
(I've seen this before)

'be a gold-digger an american' is the wordplay.
'be a gold-digger an' becomes 'prospect' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'american' becomes 'US' (United States).
'prospect'+'us'='PROSPECTUS'

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(Other definitions for prospectus that I've seen before include "Advertising booklet for school or university" , "Promotional booklet" , "Booklet of what's on offer" , "Programme" , "Outline plan for approval" .)

I've seen this clue in the Evening Standard.

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