Crossword Clue:

6 is a rare one

AnswerCrossword Clue
PAR6 is a rare one
MINERALPitchblende is a rare one.
STELE"O Rare Ben Johnson" is engraved (in error) on one
SCHManhattan's P.S. 6 is one
XXXXXXEccentric ironer is one who makes an art of his work (6)
DABSQXGYLPWOne of two top actors is ourside prison with some Spanish speakers (5,6)