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  2. Sioux Quartzite - Wikipedia

    en.wikipedia.org/wiki/Sioux_quartzite

    Sioux Quartzite at Falls Park, Sioux Falls, South Dakota Cross-bedding in the Sioux Quartzite, Blue Mounds State Park, Minnesota, United States.. The Sioux Quartzite is a Proterozoic quartzite that is found in the region around the intersection of Minnesota, South Dakota, and Iowa, and correlates with other rock units throughout the upper midwestern and southwestern United States.

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

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

    Barite Rose (1968) Oregon [59] [60] State Twin Minerals: Oregonite (2013) and Josephinite (2013) Thunderegg (1965) Oregon sunstone labradorite (1987) Pennsylvania [61] Rhode Island [62] Bowenite serpentine (1966) Cumberlandite (1966) South Carolina [63] Blue granite (1969) Amethyst (1969) South Dakota [64] [65] Rose quartz (1966) Fairburn agate ...

  4. St. Peter Sandstone - Wikipedia

    en.wikipedia.org/wiki/St._Peter_Sandstone

    The St. Peter Sandstone is an Ordovician geological formation. It belongs to the Chazyan stage of the Champlainian series in North American regional stratigraphy, equivalent to the late Darriwilian global stage. This sandstone originated as a sheet of sand in clear, shallow water near the shore of a Paleozoic sea and consists of fine-to-medium ...

  5. Pegmatite - Wikipedia

    en.wikipedia.org/wiki/Pegmatite

    Pegmatite. A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes greater than 1 meter (3 ft). Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic composition to granite.

  6. James River (Dakotas) - Wikipedia

    en.wikipedia.org/wiki/James_River_(Dakotas)

    Cain Creek. The James River (also known as the Jim River or the Dakota River) is a tributary of the Missouri River, approximately 710 miles (1,140 km) long, draining an area of 20,653 square miles (53,490 km 2) in the U.S. states of North Dakota and South Dakota. [1] About 70 percent of the drainage area is in South Dakota. [2]

  7. Ohio River - Wikipedia

    en.wikipedia.org/wiki/Ohio_River

    The Ohio River is a 981-mile-long (1,579 km) river in the United States. It is located at the boundary of the Midwestern and Southern United States, flowing in a southwesterly direction from western Pennsylvania to its mouth on the Mississippi River at the southern tip of Illinois. It is the third largest river by discharge volume in the United ...

  8. Homestake Mine (South Dakota) - Wikipedia

    en.wikipedia.org/wiki/Homestake_Mine_(South_Dakota)

    Homestake Mine (South Dakota) Coordinates: 44°21′22″N 103°45′53″W. The Homestake Mine pit in Lead, South Dakota. Typical auriferous greenschist gold ore from the Homestake Mine. Two small masses of native gold (Au) are visible near the bottom right. The Homestake Mine was a deep underground gold mine (8,000 feet or 2,438 m) located in ...

  9. Dignity of Earth and Sky - Wikipedia

    en.wikipedia.org/wiki/Dignity_of_Earth_and_Sky

    Dignity of Earth and Sky (shortened to Dignity for brevity) is a sculpture on a bluff overlooking the Missouri River near Chamberlain, South Dakota. [2] The 50-foot (15.24 meter) high stainless steel statue by South Dakota artist laureate Dale Claude Lamphere depicts an Indigenous woman in Plains-style dress receiving a star quilt.

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