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Sankar posted an Question
January 23, 2021 • 16:01 pm 30 points
  • IIT JAM
  • Geology (GG)

In igneous rock olivine and quartz may coexit together. justify it by forsterite-silica system.

In igneous rock olivine and quartz may coexits together. justify it by forsterite-silica system

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    Sajan sarthak best-answer

    Olivine does not naturally occur with the mineral quartz. Quartz can only form from magmas that are relative rich in silica, while the olivine minerals only form from magmas that are relatively less in silica, so quartz and olivine are incompatible minerals. THEY ARE NOT EXISTING AS TOGETHER COOLED CRYSTAL RATHER WHAT WE SEE THE FORSTERITE SILLICA SYSTEM IS THE MELT PHASE OF MAGMA ...THATS WHY ENSTATITE FORMED DURING THE PROCESS TO SEPARATE THEM...MEANS THEY REACT TO FORM SEPARATE PHASE.

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    but sir in extensive fractionaliztion it never happens? basically i don't know the term i just hear it.. so if it possible pls discuss it properly

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