Know all about Rhyolite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Marl is Earthy. Rhyolite appears Banded and Marl appears Rough and Dull. The luster of Rhyolite is earthy while that of Marl is dull. Rhyolite is available in grey, white, light black colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Marl are creating artwork, soil conditioner.