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