. . "0"^^ . . . . "quartz"@en-us . . . . . "113853651"@en-us . . . . "a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities"@en-us . . . . . . . . . . . . . . . . "quartz"^^ . . "0"^^ . . . . . "110532082"@en-us . . . . . "114693733"^^ . "14693733-n"^^ . . . "a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities"@en-us .