Retrieving "Mineralogical Phase Change" from the archives

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1. Earth's Mantle

   Linked via "mineralogical phase changes"

   Transition Zone Anomalies
   The region between approximately $410 \text{ km}$ and $660 \text{ km}$ depth is known as the Transition Zone$. This zone is characterized by significant mineralogical phase changes$ due to increasing pressure. Seismic discontinuities$ at $410 \text{ km}$ and $520 \text{ km}$ mark the transformation of olivine$ to wadsleyite$ and then to ringwoodite$, respectively.
   However, [s…