chert
noun
Definitions
Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.
A flint-like tool made from chert.
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Definitions
Massive, usually dull-colored and opaque, quartzite, hornstone, impure chalcedony, or other flint-like mineral.
A flint-like tool made from chert.