The most common and most likely answer to this crossword clue is the 6 letter word RHODES
I've seen this crossword clue in Financial Times
R
H
O
D
E
S
More clues leading to the result RHODES
- Cycled round hot southern island
- Holiday island with drunken hordes
- Rich old entrepreneurs all on vacation somewhere in Greece
- Greek island which will lead, they say, to Italian city
- Cecil longing to leave horrible Shoreditch
- Island where gardeners penned poem
- Island adventurer making fortune from mines
- Wandering tribe’s resistance mounting on southern island
- Horace’s work maybe fenced by body of gardeners somewhere in Greece
- Gardeners touring idyll perhaps somewhere in the Med
Buddy explains!
The straight part
We know that "Island/adventurer making fortune from mines" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case island/adventurer making fortune from mines = rhodes.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.