Where Is Chert Commonly Found?

Where Is Chert Commonly Found? Chert is found in settings as diverse as hot spring deposits (siliceous sinter), banded iron formation (jaspilite), or alkaline lakes. However, most chert is found either as bedded chert or as nodular chert. How do you identify chert? Chert has four diagnostic features: the waxy luster, a conchoidal (shell-shaped) fracture