Flint
Last modified by TerraIndex TerraIndex on 2021/09/30 15:18
Flint is also called chert by geologists. Flint is a microcrystalline rock made of silica. Flint begins as deposited chalk and due to expose to water it changes the carbonate-particles into silica-particles. Flint is often found banded in between two limestone layers. Chert breaks with a conchoidal fracture which means that it produces sharp edges and is therefor often used for sharp tools.
Characteristics
Flint occurs in a wide variety of colors, because other minerals can be present within the flint composition giving it a darker color. Flint is a very hard rock type with a 6.5 on Mohr's scale. The most abundant mineral in flint is obviously quartz.
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