Argillite is a 9 letter English word. It's valid Words with friends word worth 13 points.
You can make 295 anagrams from letters in Argillite (aegiillrt).
1785-95; Latin argill(a) argil + -ite1
The fact that argillite continued in use until the very last does not affect this conclusion.
It is very significant that we never find one where the workman used both flint and argillite.
Next above the Altyn lies thirty-four hundred feet of Appekunny argillite, or dull-green shale.
Here anthracitiferous coal is found in beds of argillite and sandstone.
Sandstone may be converted into quartzite, and shale into argillite, a compact, massive clay rock.
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