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