Know all about Tachylite and Basalt properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Basalt belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Basalt is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Tachylite appears Glassy and Basalt appears Dull and Soft. The luster of Tachylite is resinous while that of Basalt is not available. Tachylite is available in black, dark brown colors whereas Basalt is available in black, brown, light to dark grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Basalt are an oil and gas reservoir, commemorative tablets, creating artwork, used in aquariums.