Assertion: magnesium carbonate | /r/HasProperty | key raw material
Facets:
value: in magnesium oxide production
type: LOCATION
Source sentences:
text: Magnesium carbonate is a key raw material in magnesium oxide production, which is used in the cement and steel industries as a refractory material.
text: Magnesium carbonate is a key raw material in magnesium oxide production, which is used in the cement and steel industries as a refractory material.