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Clue: "Petroleum source"
"Petroleum source" is a New York Times crossword puzzle clue that we have seen 1 time.
Possible answer
SHALE
Likely related crossword puzzle clues
Mudstone
Oil source
Kind of oil
Some mudrock
Fossil medium
Fossil source
Laminated rock
Shelf material
Synfuel source
Fracking target
Brick ingredient
*Sedimentary rock
Slate, originally
Fracking material
One source of oil
Show more
Recent usage in crossword puzzles
New York Times -
March 9, 2003