N'ihe gbasara mbara ala, Slate bụ nkume metamorphic mara mma nke nwere ntụ ntụ sedimentary ma ọ bụ mgbawa ugwu nke sitere na metamorphism ejirila kemịkalụ na n'usoro gbanwee.Slate nwere ahịrị abụọ akọwapụtara nke mmebi - mgbawa na ọka.Ndị a na-eme ka o kwe omume ikewa slate ahụ ka ọ bụrụ obere mpempe akwụkwọ, nke a ga-egbutu ma mee ka ọ bụrụ slate ụlọ, yana ọtụtụ ngwa ndị ọzọ.
CDPH Slate na-eji ahụmịhe afọ anyị iji hụ na ịdị mma nke taịlị slates eke karịrị ihe ndị ahịa anyị tụrụ anya, ma n'ime njirimara ngwaahịa ahụ yana asọmpi nke ọnụego anyị nwere ike inye.
Anyị slate nwere ike ji mee ihe maka Wall Taịlị, Floor Tiles, Roofing Tiles, Paving Stone , steepụ , Curbs , Kerbstone , Crazy Pavers , Flagstones , Steppers , Nkwụsị Nkume , Nzọụkwụ , ngere na ibe.