Know all about Phonolite and Basaltic Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Phonolite and Basaltic Trachyandesite belong to Igneous Rocks.Texture of Phonolite is Granular whereas that of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Phonolite appears Banded and Foilated and Basaltic Trachyandesite appears Dull and Soft. The luster of Phonolite is greasy to dull while that of Basaltic Trachyandesite is not available. Phonolite is available in brown, buff, cream, green, grey, pink, white colors whereas Basaltic Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Phonolite are cemetery markers, creating artwork and that of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork.