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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...

   South Dakota [64] [65] Rose quartz (1966) Fairburn agate (1966) and State Jewelry: Black Hills Gold: Tennessee [66] Agate (2009) Limestone (from 1979 to present) and ...

4. 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 ...

5. Quartzite - Wikipedia

   en.wikipedia.org/wiki/Quartzite

   Quartzite. Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone. [1][2] Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and ...

6. Rosebud Indian Reservation - Wikipedia

   en.wikipedia.org/wiki/Rosebud_Indian_Reservation

   Website. rosebudsiouxtribe-nsn.gov. The Rosebud Indian Reservation is an Indian reservation in South Dakota, United States. It is the home of the federally recognized Rosebud Sioux Tribe, who are Sicangu, a band of Lakota people. The Lakota name Sicangu Oyate translates as the "Burnt Thigh Nation", also known by the French term, the Brulé Sioux.

7. 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.