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Rhenium has one stable isotope, rhenium-185, which nevertheless occurs in minority abundance, a situation found only in two other elements (indium and tellurium). Naturally occurring rhenium is only 37.4% 185 Re, and 62.6% 187 Re, which is unstable but has a very long half-life (~10 10 years).
Etzanoa is a historical city of the Wichita people, located in present-day Arkansas City, Kansas, near the Arkansas River, that flourished between 1450 and 1700. [1] Dubbed "the Great Settlement" by Spanish explorers who visited the site, Etzanoa may have housed 20,000 Wichita people. [2] The historical city is considered part of Quivira. [3]
Map of the United States with Arkansas highlighted Arkansas is a state in the Southern United States. According to the 2020 United States census, it is the 33rd most populous state with 3,011,524 inhabitants and the 27th largest by land area spanning 52,035 square miles (134,770 km 2) of land. Arkansas is divided into 75 counties and contains 500 [a] [b] [c] municipalities consisting of cities ...
The Jones Mill Site, designated by the Smithsonian trinomial 3HS28, is a prehistoric archaeological site near Jones Mill in Hot Spring County, Arkansas.It is a deeply stratified site, with evidence of human habitation in at least three different time periods.
The National Historic Landmarks in Arkansas represent Arkansas's history from the Louisiana Purchase through the Civil War and the Civil Rights Movement. It contains the landmarks designated by the U.S. Federal Government for the U.S. state of Arkansas. There are 17 National Historic Landmarks (NHLs) in Arkansas.
Arkansas State Seal This list of current cities, towns, unincorporated communities, and other recognized places in the U.S. state of Arkansas whose name begins with the letter A. It also includes information on the number and names of counties in which the place lies, and its lower and upper zip code bounds, if applicable.
It turns out he found a 4.87-carat diamond in the shape of a pyramid — the largest diamond registered there since 2020, officials say. “Mr. Evans’ diamond is spectacular to see.
The location of the state of Arkansas. Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. [1] Nearly all of the state's fossils have come from ancient invertebrate life. [1]