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An amethyst geode that formed when large crystals grew in open spaces inside the rock. The largest amethyst geode found as of 2007 was the Empress of Uruguay, found in Artigas, Uruguay in 2007. It stands at a height of 3.27 meters, lies open along its length, and weighs 2.5 tons. Amethyst is also found and mined in South Korea. [19]
January 1916, scientific journal: American Mineralogist, first issue. 1916, X-ray powder diffraction: "Peter Debye (1884–1966) – Paul Scherrer (1890–1969) powder method". 1919, founding of the Mineralogical Society of America (MSA). Georg Menzer (1897–1989) solves the first crystal structure of garnet (1925). [22]
The Empress of Uruguay is the world's largest amethyst geode, standing at a height of 3.27 meters. It is open along its length and weighs 2.5 tons in its current state. It was discovered in 2007 in the Artigas department, Uruguay by the Uruguayan mining company Le Stage Minerals. Its estimated value is US $190,000, although it is not for sale.
Archaeologists uncovered a 480-year-old gun in Arizona. It’s now considered the oldest firearm ever found within the continental United States.
Nicholas C. Creede (c. 1843 – July 12, 1897) was an American prospector famous for discovering the Holy Moses Amethyst vein and other mining properties near Creede, Colorado in the late 1880s and early 1890s.
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Rock and dust samples retrieved by NASA from the asteroid Bennu exhibit some of the chemical building blocks of life, according to research that provides some of the best evidence to date that ...
In 1969, an emerald of 1,438 carats (0.2876 kg) was uncovered, the largest yet found in North America. The stone was named the Stephenson Emerald in honor of John A. D. Stephenson, a late 19th-century collector instrumental in the discovery of the first North Carolina emerald and the first world discovery of hiddenite.