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