en2015-08-18 18:04 PM CESThttp://inspire.ec.europa.eu/codelist/LithologyValue/phyllite:1http://inspire.ec.europa.eu/codelist/LithologyValue/phylliteRock with a well developed, continuous schistosity, an average grain size between 0.1 and 0.5 millimeters, and a silvery sheen on cleavage surfaces. Individual phyllosilicate grains are barely visible with the unaided eye.