BASALT
Set to 5 different clues across 6 published puzzles, most often “Volcanic rock” — The New York Times, Sunday, 28 November 2004.
6 letters
Every clue on record, most used first
- Volcanic rock2 times
The New York Times — Sunday, 28 November 2004
- Some moonrocksonce
The New York Times — Sunday, 23 September 2007
- Rosetta stone compositiononce
The New York Times — Friday, 28 October 2005
- Black rockonce
The New York Times — Wednesday, 10 March 2004
- Igneous rockonce
The New York Times — Friday, 25 August 2000