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Três Pontas, Minas Gerais, Southeast Region, Brazil

Ref.: Chris D. Parkinson et al. , " Ultrahigh-pressure pyrope-kyanite granulites and associated eclogites in Neoproterozoic nappes of southeast Brazil", 2001, Universidade do Estado do Rio de Janeiro, http://akmotoki.tripod.com/2001/Waseda/Cdp.html.

Três Pontas nappe (Quartz-K feldspar-kyanite-garnet gneisses, kyanite-garnet granulites associated with impure quartzites, calc-silicates rocks and ultramafic sills and lenses).
Lenses (boudins) of quartz+feldspar leucosomes within kyanite Al-grnulites and ultramafic lenses of phlogopite orthopyroxenites and garnet clinopyroxenites.
UHP metamorphic rocks recrystallized into high-grade granulite at shallower levels during exhumation (collision zone).





Mineral List:
  • 'Albite-Anorthite Series'
  • 'Almandine-Pyrope Series'
  • 'Apatite'
  • Calcite
  • 'Clinopyroxene Subgroup'
  • Coesite
  • Graphite
  • Ilmenite
  • Jadeite
  • 'K Feldspar'
  • Kyanite
  • 'Monazite'
  • Muscovite
  • 'Orthopyroxene Subgroup'
  • Phengite
  • Phlogopite
  • Pyrope
  • Pyrophyllite
  • Quartz
  • Rutile


    20 entries listed. 12 valid minerals.

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