Know all about Slate and Anorthosite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Anorthosite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Anorthosite is Foliated, Glassy. Slate appears Dull and Anorthosite appears Layered, Banded, Veined and Shiny. The luster of Slate is dull while that of Anorthosite is pearly to subvitreous. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white 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 Anorthosite are creating artwork, curling.