EntityQ1753363· pop 21· linked from 190 articlesTAS classificationSign in to savesystem to assign names to many common types of volcanic rocks based upon the relationships between the combined alkali content and the silica contentConnectionsInternational Standard Book NumberEntityigneous rockEntitybasaltEntityalkaliEntitysilicon dioxideEntityandesiteEntityrhyoliteEntitytrachyteEntitydaciteEntityvolcanic rockEntityphonoliteEntityfeldspathoidEntityQAPF diagramEntitybasaniteEntitylamprophyreEntitylatiteEntitymeliliteEntitytephriteEntitybasaltic andesiteEntitytextureEntityCategoriesIgneous petrologyIgneous rocks