Know all about Hornfels and Slate properties here. All properties of rocks are important as they define the type of rock and its application. Hornfels and Slate belong to Metamorphic Rocks.Texture of Hornfels is Granular, Platy whereas that of Slate is Foliated. Hornfels appears Dull and Slate appears Dull. The luster of Hornfels is shiny while that of Slate is dull. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors. The commercial uses of Hornfels are cemetery markers, commemorative tablets, creating artwork and that of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates.