Know all about Trachyandesite and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Tephrite belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Tephrite is Aphanitic to Porphyritic. Trachyandesite appears Dull and Soft and Tephrite appears Vesicular. The luster of Trachyandesite is earthy while that of Tephrite is subvitreous to dull. Trachyandesite is available in black, brown, light to dark grey colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Tephrite are production of lime, soil conditioner.