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Page 194
There are five principal Magnesium - iron pyroxenes combinations of exsolution
pairs : ( 1 ) augite with hyperEnstatite Mg , Si , o sthene lamellae , ( 2 ) augite with
pigeonite lamellae , ( 3 ) Orthoferrosilite Fe3 + Si20 augite with both pigeonite ...
There are five principal Magnesium - iron pyroxenes combinations of exsolution
pairs : ( 1 ) augite with hyperEnstatite Mg , Si , o sthene lamellae , ( 2 ) augite with
pigeonite lamellae , ( 3 ) Orthoferrosilite Fe3 + Si20 augite with both pigeonite ...
Page 195
Pigeonite, clinoenstatite, and omphacite have two symmetrically distinct types of
tetrahedral chains. Orthopyroxenes also have two distinct types of tetrahedral
chains and an octahedral stacking sequence that leads to a doubling of the a
axis.
Pigeonite, clinoenstatite, and omphacite have two symmetrically distinct types of
tetrahedral chains. Orthopyroxenes also have two distinct types of tetrahedral
chains and an octahedral stacking sequence that leads to a doubling of the a
axis.
Page 197
( Far left ) Bronzite crystal from an ultramafic rock ; thin lamellae of a calcium - rich
species , probably pigeonite , have separated from the bronzite , and the host (
grayish ) thus has a very low calcium content ( magnified about 40X ) .
( Far left ) Bronzite crystal from an ultramafic rock ; thin lamellae of a calcium - rich
species , probably pigeonite , have separated from the bronzite , and the host (
grayish ) thus has a very low calcium content ( magnified about 40X ) .
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CONTENTS METAPHYSICS 27 MEXICO | 27 |
MEXICO CITY | 51 |
MICHELANGELO | 55 |
Copyright | |
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