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Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of quartz. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Almost all commercially available ametrine is mined in Bolivia. The colour of the zones visible within ametrine are due to differing oxidation states ...
Amethyst is a violet variety of quartz.The name comes from the Koine Greek αμέθυστος amethystos from α-a-, "not" and μεθύσκω (Ancient Greek) methysko / μεθώ metho (Modern Greek), "intoxicate", a reference to the belief that the stone protected its owner from drunkenness. [1]
The Brickey family originated from France and the family came to the United States in the late 1600s." [Both Parton and Cyrus are from Tennessee.] Parton, 78, was promoting her new cookbook, ...
There will always be challenges that come along with that. The way [ownership] has phrased it to me since the sale was announced was, 'We just need to keep doing what we're doing. Business as ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 25 August 2024. Development of the table of chemical elements The American chemist Glenn T. Seaborg —after whom the element seaborgium is named—standing in front of a periodic table, May 19, 1950 Part of a series on the Periodic table Periodic table forms 18-column 32-column Alternative and extended ...
"My most potent memories of Ina come from when I first discovered her TV show," Swift said in October 2022 for the Food Network Magazine's celebration of Barefoot Contessa’s 20th anniversary. "I ...
Metformin was approved in Canada in 1972, [6] but did not receive approval by the U.S. Food and Drug Administration (FDA) for type 2 diabetes until 1994. [163] Produced under license by Bristol-Myers Squibb , Glucophage was the first branded formulation of metformin to be marketed in the U.S., beginning on 3 March 1995. [ 164 ]
History of penicillin. The history of penicillin follows observations and discoveries of evidence of antibiotic activity of the mould Penicillium that led to the development of penicillins that became the first widely used antibiotics. Following the production of a relatively pure compound in 1942, penicillin was the first naturally-derived ...