Know all about Phyllite and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Picrite belongs to Igneous Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Picrite is Earthy, Rough. Phyllite appears Crinkled or Wavy and Picrite appears Rough and Shiny. The luster of Phyllite is phyllitic while that of Picrite is subvitreous to dull. Phyllite is available in black to grey, light greenish grey colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).