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Lynch Quarry Site, North Dakota, NRHP-listed and a U.S. National Historic Landmark, a flint quarry that was "a major source of flint found at archaeological sites across North America, and it has been estimated that the material was mined there from 11,000 B.C. to A.D. 1600."
^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In 2008, a State Glacial Rock (Rolling Rock) was designated as well. [82]
North Carolina Granite Corporation Quarry Complex is a historic granite quarry and national historic district located at Mount Airy, Surry County, North Carolina.The district encompasses 22 contributing buildings, 1 contributing site, and 8 contributing structures in an area approximately one mile long and 1/3 mile wide.
Red Bluff Flint Quarries is a historic archaeological site located near Allendale, Allendale County, South Carolina. The site consist of two outcrops of marine chert or flint, which were heavily used by Native Americans in prehistoric times as sources of tool raw materials. [2] [3] It was added to the National Register of Historic Places in ...
The Spruce Pine Mining District is a swath of the valley of the North Toe River in the Blue Ridge Mountains of northwestern North Carolina. The area is mined for its mica, kaolin, quartz and feldspar. [1] Spruce Pine district is one of the largest suppliers of high-purity quartz, which is used in the manufacture of silicon for integrated ...
The Big Rock Nature Preserve is a nature preserve and park with a natural rock shelter in Charlotte, North Carolina. Big Rock is known for its "very big and quite significant rocks" [ 2 ] which are the largest known exposed boulders in Mecklenburg County .
Chimney Rock, North Carolina restoration efforts post-Helene 2/1/2025Chimney Rock, North Carolina restoration efforts post-Helene 2/1/2025
Flint, occasionally flintstone, is a sedimentary cryptocrystalline form of the mineral quartz, [1] [2] categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely used to make stone tools and start fires. Flint occurs chiefly as nodules and masses in sedimentary rocks, such as chalks and limestones.