European Geosciences Union General Assembly 2015 - Garnet Classification
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Estimates of metasomatic melts composition
Sample C1 (Sun & McDonough, 1989)
The calculated melts in equilibrium with
Group III-IV-V garnets and
clinopyroxenes don't show similar with
composition of Grib kimberlite that
suggest their more differentiated
metasomatic origin;
The calculating was performed using
partition coefficient for deep lithospheric
mantle situations [Burgess and Harte,
2004].
1000
100
1
I
0.1
CC
BY
equilibrium
with Gar
megacrysts
Group IV
IV
Griba, autoliths
Griba, kimberlite
Kd - 1000 °C,
Burgess and Harte, 2004
equilibrium with Cpx
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Sample C1 (Sun & McDonough, 1989) Sample/ C1 (Sun & McDonough, 1989)
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EUROPEAN
GEOSCIENCES UN
General Assembly 2015
1000
equilibrium with Cpx
Group III
megacrysts
100
Griba, autoliths
10
I
0.1
1000
100
equilibrium
with Gar
Griba, kimberlite
Kd - 1000 °C,
Burgess and Harte, 2004
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
10
megacrysts
T
0.1
equilibrium
with Gar
Group V
V
Griba, autoliths
Griba, kimberlite
Kd - 1000 °C,
Burgess and Harte, 2004
La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
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