Considering the isobaric phase diagram for olivine (left) and equilibrium crystallization of melt X (Fo6o) as it cools ... a.at what temperature does the first crystal form? b.what is the composition ofthe first crystal to form? c.at l600°C how much (wt.%) ofthe melt has crystallized? d. 1600°C what is the composition o f the melt? e.at what temperature does the last crystal form (i.e. at what temperature is the magma completely crystallized?) f. what is (are) the composition(s) ofthe las crystal(s) to form? g.what is the composition ofthe final melt, just before crystallization is complete?
Considering the isobaric phase diagram for olivine (left) and equilibrium crystallization of melt X (Fo6o) as it cools ... a.at what temperature does the first crystal form? b.what is the composition ofthe first crystal to form? c.at l600°C how much (wt.%) ofthe melt has crystallized? d. 1600°C what is the composition o f the melt? e.at what temperature does the last crystal form (i.e. at what temperature is the magma completely crystallized?) f. what is (are) the composition(s) ofthe las crystal(s) to form? g.what is the composition ofthe final melt, just before crystallization is complete?
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
Problem 1LR
Related questions
Question
Considering the isobaric phase diagram for olivine (left) and
equilibrium crystallization of melt X (Fo6o) as it cools ...
a.at what temperature does the first crystal form?
b.what is the composition ofthe first crystal to form?
c.at l600°C how much (wt.%) ofthe melt has crystallized?
d. 1600°C what is the composition o f the melt?
e.at what temperature does the last crystal form (i.e. at what temperature is the magma completely crystallized?)
f. what is (are) the composition(s) ofthe las crystal(s) to form?
g.what is the composition ofthe final melt, just before crystallization is complete?
Transcribed Image Text:Temperature °C
1890
1800
1600
1400
1200
0
Mg2SiO4
Fo
Olivine
20
x.
Liquid
Olivine + Liquid
40
60
Weight % Fa
80
1205
100
Fe2SiO4
Fa
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