Know all about Shale and Troctolite properties here. All properties of rocks are important as they define the type of rock and its application. Shale belongs to Sedimentary Rocks while Troctolite belongs to Igneous Rocks.Texture of Shale is Clastic, Splintery whereas that of Troctolite is Phaneritic. Shale appears Muddy and Troctolite appears Veined and Shiny. The luster of Shale is dull while that of Troctolite is not available. Shale is available in black, brown, buff, green, grey, red, yellow colors whereas Troctolite is available in dark grey to black colors. The commercial uses of Shale are creating artwork, pottery and that of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.