Crossword Clue:

one versed in minerals a mineralogist

AnswerCrossword Clue
LATINISTOne versed in a certain language.
POLEMISTOne versed in disputation
BIBLETHUMPEROne well-versed in verses
ARABISTOne versed in Saracen lore.
POETOne well-versed in words' worth
PETROLOGISTOne versed in the study of rocks.
POETOne who's well-versed in the arts?