siliceous
si-li-ceous
adjective
Composed of or containing silica, a hard, glassy mineral found in rocks.
"Many rocks are siliceous, rich in quartz."
Thesaurus
Synonyms: silicious
si-li-ceous
Composed of or containing silica, a hard, glassy mineral found in rocks.
"Many rocks are siliceous, rich in quartz."
Synonyms: silicious