Fractional crystallization (FC) can be thought of as the reverse of partial melting. In the case of FC, as a magma cools and minerals began to crystallize, the composition of the remaining liquid (melt):

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Fractional crystallization (FC) can be thought of as the
reverse of partial melting. In the case of FC, as a magma
cools and minerals began to crystallize, the composition
of the remaining liquid (melt):
stays the same, since silicate crystallization is
independent of temperature
stays the same, as all elements in the melt form into
crystals at the same rates
becomes more felsic, as Fe and Mg are taken up by
crystals
cannot be predicted, since crystals form in random
order
becomes more mafic, as Si, Al, K and other elements are
taken up by crystals
Transcribed Image Text:Fractional crystallization (FC) can be thought of as the reverse of partial melting. In the case of FC, as a magma cools and minerals began to crystallize, the composition of the remaining liquid (melt): stays the same, since silicate crystallization is independent of temperature stays the same, as all elements in the melt form into crystals at the same rates becomes more felsic, as Fe and Mg are taken up by crystals cannot be predicted, since crystals form in random order becomes more mafic, as Si, Al, K and other elements are taken up by crystals
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