Chert

Chert
Wikimedia Commons

Chert

Sedimentary

Hardness: 7

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Banded Iron FormationBrecciaConglomerate (Puddingstone)LimestoneSandstoneShale

Chert is hard, microcrystalline quartz that breaks with conchoidal fracture; it occurs as nodules and layers, commonly in limestone and dolostone.

Parent: Sedimentary Rocks

Related: Banded Iron Formation, Breccia, Conglomerate (Puddingstone), Limestone

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