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Chiarake (Chiaracke; Chiaraque), Ayopaya Province, Cochabamba Department, Bolivia

1 x 2km Cretaceous magnesiocarbonatite intrusion (with minor ferrocarbonatite), apparently derived from primary carbonatitic mantle melt, intruded into Ordovician sediments. Located at approx 4,100 m elevation, 5km SW of the better-known Cerro Sapo carbonatite but (unlike Cerro Sapo) the Chiarake carbonatite has no visible relationship to nepheline syenite intrusion. Very low in silica (less than 1%); enriched in La-Ce-Nd-Sm (up to 1.3 wt%).
Ref: Matos, S.R. (2000) paper presented at XIII Congr. Geol. Bol. (La Paz).





Mineral List:
  • Ankerite
  • 'Apatite'
  • Baryte
  • Bastnäsite-(Ce)
  • Calcite
  • Churchite-(Y) ?
  • Dolomite
  • 'Florencite' ?
  • Fluorite
  • Goyazite ?
  • 'K Feldspar'
  • Magnesite
  • Magnetite
  • 'Mica Group'
  • 'Monazite'
  • 'Parisite' ?
  • Strontianite
  • 'Synchysite' ?
  • Thorbastnäsite
  • Thorite


    20 entries listed. 13 valid minerals.

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