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