One who mounted black stone and loaded tourist (3-6)
I believe the answer is:
jet-setter
'tourist' is the definition.
(thesaurus)
'one who mounted black stone and loaded' is the wordplay.
I cannot quite see how this works, but
'black' could be 'jet' (jet black is a kind of black) and 'jet' is present in the answer.
'stone' could be 'sett' (sett is a kind of stone) and 'sett' is found within the answer.
The remaining letters 'er' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for jet-setter that I've seen before include "Rich and fashionable traveller" , "Member of the rich and famous who travel widely" , "Person who travels widely and frequently for pleasure" .)