Know all about Picrite and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Picrite is Earthy, Rough whereas that of Pseudotachylite is Quench. Picrite appears Rough and Shiny and Pseudotachylite appears Dull and Soft. The luster of Picrite is subvitreous to dull while that of Pseudotachylite is vitreous. Picrite and Pseudotachylite are available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Pseudotachylite are creating artwork, gemstone.