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