A piece of chert.
Origin of chert; from uncertain or unknown; perhaps
- A variety of silica that contains microcrystalline quartz.
- A siliceous rock of chalcedonic or opaline silica occurring in limestone.
Origin of chertOrigin unknown.
(countable and uncountable, plural cherts)
Generally, in mineralogy and geology, a chert does not have a conchoidal fracture. In North American archeology the term chert occasionally is still used for various siliceous minerals (including flint) that have a conchoidal fracture; this leads to confusion between the terms flint and chert in some archeology texts.