Chert
Esquema
Jerarquía
<materials by composition> > inorganic material > rock > sedimentary rock > <sedimentary rock by composition>
Descripción
Fine-grained, dense sedimentary rock consisting of interlocking crystals of quartz approximately 30 microns in diameter. Chert and its varieties, such as flint, are non-gem varieties of cryptocrystalline-granular quartz. These stones chip very easily and thus may be fashioned into tools with a sharp edge; they are also used for building.
Subcategorías
URI original del concepto
Otros términos
- hoornkiezel [nl]
- roche cornéenne [fr]
- horsteno [es]
- cherts [en]
- roches cornéenne [fr]
- roches cornénnes [fr]
- pedernal [es]