Assertion: garnet's formula | /r/HasProperty | mg
Facets:
value: fe
type: DEGREE
Source sentences:
text: Pyrope (from the Greek pyrōpós meaning "firelike") is red in color and chemically an aluminium silicate with the formula Mg 3 Al 2 (SiO 4 ) 3 , though the magnesium can be replaced in part by calcium and ferrous iron.
text: Knorringite is a magnesium-chromium garnet species with the formula Mg 3 Cr 2 (SiO 4 ) 3 .
text: Olivine is a magnesium orthosilicate containing some iron with the variable formula (Mg,Fe) 2 SiO 4 ; the pyroxenes are chain silicates having the variable formula (Ca,Na,FeII,Mg)(Cr,Al,FeIII,Mg,Mn,Ti,V)Si
text: For example, the olivine group is described by the variable formula (Mg, Fe) 2 SiO 4 , which is a solid solution of two end-member species, magnesium-rich forsterite and iron-rich fayalite, which are described by a fixed chemical formula.