Know all about Phonolite and Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Phonolite and Trachyandesite belong to Igneous Rocks.Texture of Phonolite is Granular whereas that of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Phonolite appears Banded and Foilated and Trachyandesite appears Dull and Soft. The luster of Phonolite is greasy to dull while that of Trachyandesite is earthy. Phonolite is available in brown, buff, cream, green, grey, pink, white colors whereas Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Phonolite are cemetery markers, creating artwork and that of Trachyandesite are creating artwork, pottery.