Know all about Picrite and Phyllite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Phyllite belongs to Metamorphic Rocks.Texture of Picrite is Earthy, Rough whereas that of Phyllite is Phyllitic Sheen, Slaty. Picrite appears Rough and Shiny and Phyllite appears Crinkled or Wavy. The luster of Picrite is subvitreous to dull while that of Phyllite is phyllitic. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Phyllite is available in black to grey, light greenish grey 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 Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates.