X Quiz 81 Phase Diagram Labelsp X 1890 1800 1600 1400 Olivine 1200- 0 20 40 60 80 100 Mg2SiO4 Fe2SiO4 Weight % Fa Fo Fa
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X Quiz 81 Phase Diagram Labelsp X 1890 1800 1600 1400 Olivine 1200- 0 20 40 60 80 100 Mg2SiO4 Fe2SiO4 Weight % Fa Fo Fa
X Quiz 81 Phase Diagram Labelsp X 1890 1800 1600 1400 Olivine 1200- 0 20 40 60 80 100 Mg2SiO4 Fe2SiO4 Weight % Fa Fo Fa Assume equilibrium crystallization. Start with a composition of 70% Mg SiO4/30% Fe SiO4 What temperature will crystallization begin? What is the composition of the phase that crystallizes first? What is the composition of the melt at 1700°C?) What is the temperature that crystallization will end? What is the composition of the last bit of melt at the end of crystallization? Temperature °C + Liquid 1205 < 1
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