Flint
| Colour | Gray, Black, Brown |
|---|
What is Flint?
Flint, occasionally flintstone (SiO2 ), is a sedimentary cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires.
How to identify Flint
Flint in different forms
Stones often confused with Flint
Frequently asked questions
How hard is Flint?
Flint's hardness varies; see the property table above.
What colour is Flint?
Flint is typically gray, black, brown.