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