Assertion: mineral's chemical formula | /r/HasProperty | mg
Facets:
value: si
type: DEGREE
Source sentences:
text: Its chemical formula is (Mg,Fe)SiO; the red spheres are oxygen, the blue spheres silicon and the green spheres magnesium or iron.
text: Talc is a clay mineral composed of hydrated magnesium silicate with the chemical formula Mg 3 Si 4 O 10 (OH) 2 .