Know all about Syenite and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Syenite and Tachylite belong to Igneous Rocks.Texture of Syenite is Earthy whereas that of Tachylite is Vitreous. Syenite appears Banded and Foilated and Tachylite appears Glassy. The luster of Syenite is subvitreous to dull while that of Tachylite is resinous. Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Tachylite is available in black, dark brown colors. The commercial uses of Syenite and Tachylite are cemetery markers, creating artwork.