The presence of metamorphic coesite, diamond, or majoritic garnet are diagnostic; other potential mineralogical indicators of UHP metamorphism, such as alpha-PbO2 structured TiO2, are not widely accepted.
The presence of metamorphic coesite, diamond, or majoritic garnet are diagnostic. Other potential mineralogical indicators of UHP metamorphism are not widely accepted. This was such as alpha-PbO2 structured TiO2.