Know all about Greywacke and Dolomite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke and Dolomite belong to Sedimentary Rocks.Texture of Greywacke is Clastic whereas that of Dolomite is Earthy. Greywacke appears Dull and Dolomite appears Glassy or Pearly. The luster of Greywacke is dull while that of Dolomite is vitreous and pearly. Greywacke and Dolomite are 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 Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).