Geos 306, Fall 2006, Lecture 12
Mineralogy of the Upper Mantle



Olivine


Pyroxene
Enstatite
Mg2Si2O6
Ferrosilite
Fe2Si2O6
Jadeite
NaAlSi2O6
Diopside
CaMgSi2O6
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


The Composition of the Upper Mantle

Reading
Wenk & Bulakh, Chapter 35