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  2. Obsidian - Wikipedia

    en.wikipedia.org/wiki/Obsidian

    An iridescent, rainbow-like sheen (fire obsidian) is caused by inclusions of magnetite nanoparticles creating thin-film interference. [26] Colorful, striped obsidian (rainbow obsidian) from Mexico contains oriented nanorods of hedenbergite, which cause the rainbow striping effects by thin-film interference. [25]

  3. Mirrors in Mesoamerican culture - Wikipedia

    en.wikipedia.org/wiki/Mirrors_in_Mesoamerican...

    The obsidian mirror was a metaphor for rulership and power among the Aztecs. [76] Aztec rulers used a double-sided obsidian mirror to oversee their subjects; by gazing into one side the ruler could see how his subjects were comporting themselves and in the other side his subjects could see themselves reflected back. [ 7 ]

  4. Rainbow lattice sunstone - Wikipedia

    en.wikipedia.org/wiki/Rainbow_lattice_sunstone

    Rainbow lattice sunstone is produced from a remote part of the Australian desert known as the Mud Tank Zircon Field. It is an area consisting of dry plains with rocky outcrops that lies in the Harts Range north-east of Alice Springs, Northern Territory, Australia. The primary source of this sunstone is covered by a single mining claim about 500 ...

  5. Obsidian use in Mesoamerica - Wikipedia

    en.wikipedia.org/wiki/Obsidian_use_in_Mesoamerica

    Obsidian projectile point.. Obsidian is a naturally formed volcanic glass that was an important part of the material culture of Pre-Columbian Mesoamerica.Obsidian was a highly integrated part of daily and ritual life, and its widespread and varied use may be a significant contributor to Mesoamerica's lack of metallurgy.

  6. Glass Buttes - Wikipedia

    en.wikipedia.org/wiki/Glass_Buttes

    Because the Glass Buttes complex has abundant, high-quality obsidian, the Bureau of Land Management has reserved 36 square miles (93 km 2) as a free-use area where the public can gather obsidian for private use. No permits are required; however, individuals can only remove 250 pounds (110 kg) of obsidian per year.

  7. It Takes The Entire Rainbow Of Colors To Make The Sky Blue ...

    www.aol.com/news/takes-entire-rainbow-colors-sky...

    It takes all the colors of the rainbow for us to see it that way. It happens because of something called the Rayleigh effect, or Rayleigh scattering, named after a British scientist who first ...

  8. Edziza obsidian - Wikipedia

    en.wikipedia.org/wiki/Edziza_obsidian

    Edziza obsidian is a naturally formed volcanic glass found at the Mount Edziza volcanic complex in northwestern British Columbia, Canada. It occurs in at least four geological formations of the volcanic complex and was widely used by indigenous peoples during the pre-Columbian era .

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