Know all about Marl and Foidolite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Foidolite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Foidolite is Earthy. Marl appears Rough and Dull and Foidolite appears Dull. The luster of Marl is dull while that of Foidolite is subvitreous to dull. Marl is available in beige, brown, green, grey, white colors whereas Foidolite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Foidolite are cemetery markers, commemorative tablets, creating artwork.