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