Know all about Trondhjemite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Trondhjemite is Phaneritic whereas that of Pseudotachylite is Quench. Trondhjemite appears Banded and Foilated and Pseudotachylite appears Dull and Soft. The luster of Trondhjemite is subvitreous to dull while that of Pseudotachylite is vitreous. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Pseudotachylite are creating artwork, gemstone.