. "acidic igneous rock"@en . . "2015-08-18 18:01 PM CEST"^^ . . . . . . "Igneous rock with more than 63 percent SiO2."@en . "Igneous rock with more than 63 percent SiO2."@en . "http://inspire.ec.europa.eu/codelist/LithologyValue/acidicIgneousRock"^^ . . . . . . . . . "acidic igneous rock"@en . . .