Know all about Trachyte and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte and Trondhjemite belong to Igneous Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Trondhjemite is Phaneritic. Trachyte appears Banded and Trondhjemite appears Banded and Foilated. The luster of Trachyte is metallic while that of Trondhjemite is subvitreous to dull. Trachyte and Trondhjemite are available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Trachyte and Trondhjemite are cemetery markers, creating artwork.