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Crater of Diamonds State Park is a 911-acre (369 ha) Arkansas state park in Pike County, Arkansas, in the United States.The park features a 37.5-acre (15.2-hectare) plowed field, one of the few diamond-bearing sites accessible to the public.
The 1922 discovery of the Smackover oil field, after which the Smackover Formation is named, resulted in a sizeable oil boom in southern Arkansas. [ citation needed ] In addition to being a petroleum reservoir, as of 2015, the brine from the Smackover Formation is the only source of commercial bromine in the United States.
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 ...
The area was an important part of what became known as the North Arkansas Lead and Zinc District, and played a role in the development of railroads and modern infrastructure in the area. During World War I the Rush Creek mines were the center of the zinc industry in Arkansas. Ten mining companies operated 13 developed mines within the district ...
Smithsonite with calcite from the Monte Cristo mine, Rush Creek District, Marion County, Arkansas (size: 11.7 x 9.3 x 5.2 cm Ruins of the New White Eagle Mill, Rush Historic District, Buffalo National River, Arkansas. The best known and most prolific zinc mining region of north Arkansas for many years was the Rush Creek mining district of ...
Initially, Arkansas bauxite met 90% of US aluminum demand. Underground mining before and during World War II gave way to open pit mining in the 1960s. During the war, up to six million tons were mined in 1943. Arkansas bauxite mines were often passed over in favor of higher quality bauxite reserves in the Caribbean and mining ceased in 1982.
Map showing distribution of Haynesville Shale and other Unconventional Hydrocarbon Plays within Louisiana Haynesville Shale stratigraphic column for Texas. The Haynesville Shale is an informal, popular name for a Jurassic Period rock formation that underlies large parts of southwestern Arkansas, northwest Louisiana, and East Texas. It lies at ...
Map all coordinates ... Pages in category "Mining in Arkansas" The following 14 pages are in this category, out of 14 total. ... 0–9. 1915–1917 Wheelbarrow Mine ...