Olivinek
๋Sฮ
lO[v
๊สฎ@
A
2+
2
SiO
4@
k
A
2+
=Fe,Mg,Mn,Nil@ล\ํน้ฮ๛ปnฬ]_zจB
fayalite
Fe
2+
2
SiO
4
forsterite
Mg
2
Si
2
O
4
liebenbergite
(Ni,Mg)
2
SiO
4
tephroite
Mn
2+
2
SiO
4
฿้