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