Bird's Eye Rhyolite Notebook

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Bird's Eye Rhyolite from Chihuahua, Mexico

  • Rock type: spherulitic rhyolite
  • Photomicrograph: reflected, cross-polarized light

Mineral and color guide:

  • felsic spherulites: pearlescent white
  • iron oxides & hydroxides: orange to red
  • quartz: black
  • Lined Paper