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Thunderegg

Thunderegg

Nodule-like rock, that is formed within rhyolitic volcanic ash layers.

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Readers' pathsAug 2026 – Oct 2026

Readers go next to

Share of the 1,680 clicks on its links

  1. Geode

    Hollow formation inside a rock.

    18%

  2. Agate

    Banded variety of chalcedony.

    16%

  3. Lithophysa

    Felsic volcanic rock.

    14%

  4. Chalcedony

    Microcrystalline or cryptocrystalline form of silica.

    9.8%

  5. Rhyolite

    Igneous, volcanic rock, of felsic (silica-rich) composition.

    8.6%

  6. Thunderbird (mythology)

    Legendary Indigenous North American creature.

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  7. Rice Northwest Museum of Rocks and Minerals

    Historic house in Oregon, United States.

    4.5%

  8. Jasper

    Chalcedony variety colored by iron oxide.

    4.5%

  9. Opal

    Hydrated amorphous form of silica.

    4%

  10. Nodule (geology)

    Small mass of a mineral with a contrasting composition to the enclosing sediment or rock.

    3.4%

Readers come from

Share of the 3,437 readers arriving from another article

  1. Geode

    Hollow formation inside a rock.

    46%

  2. Agate

    Banded variety of chalcedony.

    25%

  3. Oregon

    U.S. state.

    16%

  4. Rhyolite

    Igneous, volcanic rock, of felsic (silica-rich) composition.

    6%

  5. Jasper

    Chalcedony variety colored by iron oxide.

    3.3%

  6. Lithophysa

    Felsic volcanic rock.

    0.73%

  7. Rockhound State Park

    State park in New Mexico, United States.

    0.35%