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