Know all about Slate and Shoshonite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Shoshonite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Shoshonite is Porphyritic. Slate appears Dull and Shoshonite appears Dull. The luster of Slate and Shoshonite is dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Shoshonite is available in brown- black, dark brown colors. The commercial uses 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 and that of Shoshonite are cemetery markers, creating artwork.