Definition
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
History
Origin
-
Discoverer
Unknown
Etymology
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
Class
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Family
Group
-
Other Categories
Fine Grained Rock, Opaque Rock