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