Know all about Rhyodacite and Troctolite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Troctolite belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Troctolite is Phaneritic. Rhyodacite appears Skeletal and Troctolite appears Veined and Shiny. The luster of Rhyodacite is greasy to dull while that of Troctolite is not available. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Troctolite is available in dark grey to black colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.