Geos 306, Lecture 15
Mineralogy of the Upper Mantle



Olivine


Pyroxene
Enstatite
Mg2Si2O6
Ferrosilite
Fe2Si2O6
Pigeonite
(Mg,Fe2+,Ca)2Si2O6
Augite
(Ca,Mg,Fe2+)2Si2O6
Diopside
CaMgSi2O6
Jadeite
NaAlSi2O6
Hedenbergite
CaFeSi2O6
Spodumene
LiAlSi2O6

Garnet
Pyrope Mg3Al2(SiO4)3
Almandine
Fe3Al2(SiO4)3
Spessartine
Mn3Al2(SiO4)3
Uvarovite
Ca3Cr2(SiO4)3
Grossular
Ca3Al2(SiO4)3
Andradite
Ca3Fe2(SiO4)3


Spinel
Spinel MgAl2O4
Hercynite
Fe2+Al2O4
Chromite
Fe2+Cr2O4
Magnetite
Fe2+Fe3+2O4
Ringwoodite
Mg2SiO4


The Composition of the Upper Mantle


The Composition of the Earth

Reading
Wenk & Bulakh, Chapter 35