what is slate rock used for
Slate is a metamorphic rock that forms from mudstone or shale. The mudstone or shale normally contains clay or volcanic ash. Slate is unique in that it does not require any type of cementation to hold its particles together.late is used for different varieties of flooring and roofing. School children used pieces of slate as a writing board to practice their math and writing during the 1800s. Slate can easily be broken into neat, thin sheet because of its foliation.