Know all about Anthracite and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Picrite belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Picrite is Earthy, Rough. Anthracite appears Veined or Pebbled and Picrite appears Rough and Shiny. The luster of Anthracite is shiny while that of Picrite is subvitreous to dull. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).