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The fossil pearls of the Million-Pearls Flowstone, Fairgrounds Room, Fort Stanton Cave, New Mexico USA
Victor J. Polyak, Paula P. Provencio, and Yemane Asmerom

  • Two cave pearl layers are preserved in a thin flowstone on an extinct stream bed
  • The pearls are referred to as ‘fossil pearls’ due to their unusual occurrence
  • The pearls consist of calcite and exhibit layers of white amorphous-like silicate material
  • Their nuclei are composed of aggregates of calcite crystals or clay balls
  • Timing of the pearl layers are coeval with two Last Glacial stadials