Know all about Marl and Schist properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Schist belongs to Metamorphic Rocks.Texture of Marl is Earthy whereas that of Schist is Foliated, Platy. Marl appears Rough and Dull and Schist appears Layered and Shiny. The luster of Marl is dull while that of Schist is shiny. Marl is available in beige, brown, green, grey, white colors whereas Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Schist are used in aquariums, writing slates.