Explanation
The general name of consolidated sedimentary rock mainly composed of layered (chain layered) silicate mineral with grain size less than 0.002mm. clay mineral include kadinite, illite, montmorillonite, sepiolite, etc; Other shoulder minerals include quartze, feldspar, mica, etc. The type and use of rock correspond to clay with the same composition.
Classification
Natural materials and products -> Mineral materials