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