Engineer succeeded separating gold from another metal (6)
I believe the answer is:
austin
'engineer' is the definition.
(I've seen this before)
'succeeded separating gold from another metal' is the wordplay.
'succeeded' becomes 's' (genealogical abbreviation).
'separating' means one lot of letters goes inside another.
'gold' becomes 'au' (Au is the chemical symbol for gold).
'from' is a charade indicator (letters next to each other).
'another metal' becomes 'tin' (tin is a kind of metal. I am not sure about the 'another' bit.).
'au'+'tin'='autin'
's' put inside 'autin' is 'AUSTIN'.
Can you help me to learn more?
(Other definitions for austin that I've seen before include "Engineer" , "US state capital - old English car manufacturer" , "Texan state capital" , "The capital of Texas (6)" , "Capital city of Texas" .)