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  2. Geode State Park - Wikipedia

    en.wikipedia.org/wiki/Geode_State_Park

    Geode State Park is a state park in Henry County, Iowa bordering Des Moines County. It is managed by the Iowa Department of Natural Resources. While it is named for Iowa's state rock, the geode, few can be found in the park. A display of geodes, with their mysterious crystal formations in their hollow cavities, can be seen at the park office.

  3. Geography of Iowa - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Iowa

    Geodes are found in southeast Iowa and are the official state rock. They consist of grey to pink cobbles within limestone that when cut or smashed open reveal a hollow crystal-filled interior. Geodes are common around Geode State Park in Henry County. [18]

  4. Geode - Wikipedia

    en.wikipedia.org/wiki/Geode

    Geodes are common in some formations in the United States (mainly in Indiana, Iowa, Missouri, western Illinois, Kentucky, and Utah). Geodes are also abundant in the Mendip Hills in Somerset, England, where they are known locally as "potato stones". [3] The term geode generally describes hollow formations.

  5. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...

  6. List of Iowa state parks - Wikipedia

    en.wikipedia.org/wiki/List_of_Iowa_state_parks

    Commemorates the site of a fort built to protect the Iowa border during the Dakota War of 1862. Geode State Park: Henry County: Danville: 1,641 664: Skunk River, Lake Geode: Features a 187-acre (76 ha) recreational reservoir and a display of geodes, the Iowa state rock. George Wyth Memorial State Park: Black Hawk County: Waterloo: 1,200 490: 1940

  7. Archaeologists find mastodon skull in Iowa, search for ...

    www.aol.com/archaeologists-mastodon-skull-iowa...

    Discovered in the southern part of the state, the find is Iowa's first well-preserved mastodon, according to the University of Iowa’s Office of the State Archaeologist. Scientists and local ...

  8. How did tornadoes form across Iowa on Tuesday? What we know ...

    www.aol.com/did-tornadoes-form-across-iowa...

    Iowa is not out of severe weather season, "by any stretch." Stay aware: If you have outdoor plans, stay aware of the weather. You can check forecasts at weather.gov/dmx.

  9. Warsaw Formation - Wikipedia

    en.wikipedia.org/wiki/Warsaw_Formation

    The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod. See also