All about Greywacke and Pegmatite Properties
Know all about Greywacke and Pegmatite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Pegmatite belongs to Igneous Rocks.Texture of Greywacke is Clastic whereas that of Pegmatite is Pegmatitic. Greywacke appears Dull and Pegmatite appears Layered, Banded, Veined and Shiny. The luster of Greywacke is dull while that of Pegmatite is grainy, pearly and vitreous. Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz.