All about Picrite and Greywacke Properties
Know all about Picrite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Picrite is Earthy, Rough whereas that of Greywacke is Clastic. Picrite appears Rough and Shiny and Greywacke appears Dull. The luster of Picrite is subvitreous to dull while that of Greywacke is dull. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, 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 Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.