what is silt?
Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz (made up of a continuous framework of SiO4 siliconâoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2) and feldspar ( KAlSi3O8 â NaAlSi3O8 â CaAl2Si2O8).