What happens when olivine comes in contact with a SiO2 rich melt?

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SUMMARY

When Mg-rich olivine comes into contact with a SiO2-rich melt, it undergoes a transformation to form orthopyroxene, specifically the mineral composition of (Mg,Fe)2Si2O6. This reaction is significant in petrology and geochemistry, particularly in understanding the crystallization processes in magmatic systems. The interaction between olivine and silica-rich melts is crucial for interpreting the evolution of igneous rocks.

PREREQUISITES
  • Understanding of mineralogy, specifically olivine and orthopyroxene compositions.
  • Familiarity with phase diagrams in petrology.
  • Knowledge of igneous rock formation processes.
  • Basic concepts of silicate melt chemistry.
NEXT STEPS
  • Research the phase relationships between olivine and SiO2-rich melts.
  • Study the crystallization processes of orthopyroxene from silicate melts.
  • Explore the role of olivine in the formation of igneous rocks.
  • Investigate the thermodynamic principles governing mineral transformations in magmas.
USEFUL FOR

Geologists, petrologists, and students studying igneous processes and mineral transformations in magmatic systems.

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im studying for an exam and this question came up anyone know what happens?
 
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If it is a Mg rich olivine, it will form orthopyroxene ((Mg,Fe)2Si2O6).
 

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