Minerals

1. olivine, peridot 橄榄石
2. majorite 镁铁榴石
3. pyroxene 辉石
4. garnet 石榴石
5. akimotoite

ringwoodite(尖晶橄榄石)

• (Mg,Fe)2SiO4
• Named after A. E. Ringwood, in 1969
• 660 km: ringwoodite –> ferropericlase + bridgmanite

bridgmanite

• the most abundant mineral in Earth’s lower mantle.
• 38% of Earth’s volume
• called silicate perovskite before the paper doi: 10.1126/science.1259369.
• magnesium iron silicate (Mg,Fe)SiO3

magnesiowustite/ferropericlase 铁方镁石

• (Mg,Fe)O