Know all about Pseudotachylite and Gossan properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite and Gossan belong to Metamorphic Rocks.Texture of Pseudotachylite is Quench whereas that of Gossan is Rough, Sandy. Pseudotachylite appears Dull and Soft and Gossan appears Dull and Banded. The luster of Pseudotachylite is vitreous while that of Gossan is metallic. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Gossan is available in brown, brown- black, gold, green, rust colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Gossan are cemetery markers, commemorative tablets, gemstone.