Stock Photo - Chert or silex is a cryptocrystalline or microcrystalline sedimentary rock composed of quartz. This sample comes from Sierra de Albarracin, Teruel, Aragon, Spain.

Stock Photo: Chert or silex is a cryptocrystalline or microcrystalline sedimentary rock composed of quartz. This sample comes from Sierra de Albarracin, Teruel, Aragon.