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