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