Last seen in:
- Universal - Oct 30 2024
- Thomas Joseph - King Feature Syndicate - Dec 30 2022
- Wall Street Journal - Mar 25 2020 - Climbing the Walls
- Newsday.com - Jun 3 2016
- Newsday.com - Aug 9 2015
- USA Today - Feb 26 2014
- Thomas Joseph - King Feature Syndicate - Jan 19 2013
- Thinks.com - May 27 2011
- Thinks.com - May 27 2009
- Premier Sunday - King Feature Syndicate - Oct 19 2008
Related Clues:
- Thin, flaky mineral
- Mineral in insulation
- Rock that's fracked
- Fossil-yielding sedimentary rock
- Flexible mineral found in igneous and metamorphic rocks
- Crumbly silicate
- Crystalline, flaky rock
- Say nothing, given drink that may be full of gas!
- Eisinglass
- Rock that's 'fracked'
- Oil-yielding mineral
- Rock from which slate is formed
- Easily cleaved rock
- Mineral in pearlescent paints
- Oil source has excited the French