Assertion: zircon | /r/HasProperty | the silicate
Facets:
Source sentences:
text: The chief ore is zircon (the silicate);
text: The principal commercial source of zirconium is zircon (ZrSiO 4 ), a silicate mineral, which is found primarily in Australia, Brazil, India, Russia, South Africa and the United States, as well as in smaller deposits around the world.