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  2. 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 ...

  3. Flambeau Mine - Wikipedia

    en.wikipedia.org/wiki/Flambeau_Mine

    Flambeau Mine map. The Flambeau Mine was an open pit mine of a copper-gold deposit near the Flambeau River, south of Ladysmith, Wisconsin, United States.It was mined by a subsidiary of Kennecott Minerals between 1993 and 1997, and returned to a fairly natural state after.

  4. Gogebic Range - Wikipedia

    en.wikipedia.org/wiki/Gogebic_Range

    Major waterfalls in Ashland County, Wisconsin include Copper Falls and Brownstone Falls on the Bad River in Copper Falls State Park. With metals trading at unprecedented prices during the early 2010s commodity bubble, companies again explored the possibilities of mining in the Gogebic Range to extract remaining, lower-quality ore. [3]

  5. 5 Most Valuable American Coins Still in Circulation - AOL

    www.aol.com/5-most-valuable-american-coins...

    The spare change in your coin jar, for instance, could hold a rare collectible ranging from a normal-looking 2004 Wisconsin state quarter to a 1787 Brasher doubloon.

  6. Point of Rocks (Baraboo, Wisconsin) - Wikipedia

    en.wikipedia.org/wiki/Point_of_Rocks_(Baraboo...

    Point of Rocks is located along the east side of a curve in US 12, 0.25 miles (0.40 km) south of its intersection with Wisconsin Highway 159.The outcropping itself is around 4,000 feet (1,200 m) thick and consists of maroon, pink, and purple quartzite, while the surrounding area is covered by trees.

  7. Silver Mound Archeological District - Wikipedia

    en.wikipedia.org/wiki/Silver_Mound_Archeological...

    Silver Mound is a sandstone hill in Wisconsin where American Indians quarried quartzite for stone tools. Tools made from Silver Mound's quartzite have been found as far away as Kentucky. The oldest have been dated to around 11,000 years ago, so they provide clues about the first people in Wisconsin. [3]

  8. Archaeologists Found 11 Canoes Buried in a Wisconsin Lake—and ...

    www.aol.com/lifestyle/archaeologists-found-11...

    The Wisconsin Historic Society has now found what it believes are 11 canoes, all from what was likely an ancient lakeshore, each serving as its own discreet time capsule of sorts. The oldest of ...

  9. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    The best known precious metals are the precious coinage metals, which are gold and silver. Although both have industrial uses, they are better known for their uses in art , jewelry , and coinage. Other precious metals include the platinum group metals: ruthenium , rhodium , palladium , osmium , iridium , and platinum , of which platinum is the ...

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