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Moissanite (/ ˈmɔɪsəˌnaɪt /) [ 5 ] is naturally occurring silicon carbide and its various crystalline polymorphs. It has the chemical formula SiC and is a rare mineral, discovered by the French chemist Henri Moissan in 1893. Silicon carbide or moissanite is useful for commercial and industrial applications due to its hardness, optical ...
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 ...
Gemstones of the World revised 5th edition, 2013 by Walter Schumann ISBN 978-1454909538 Smithsonian Handbook: Gemstones by Cally Hall, 2nd ed. 2002 ISBN 978-0789489852 v
The Arbuckle Mountains are an ancient mountain range in south-central Oklahoma in the United States. They lie in Murray, Carter, Pontotoc, and Johnston counties. [1] The granite rocks of the Arbuckles date back to the Precambrian Eon some 1.4 billion years ago which were overlain by rhyolites during the Cambrian Period.
Aquamarine. “Aquamarine is a calming gemstone that symbolizes fluidity and flow, healing, allowance, and acceptance of what is,” Salzer says. “Look for clarity and luminosity in an ...
A number of runestones have been found in Oklahoma. All of them are of modern origin dating to the 19th century "Viking revival" or were produced by 19th-century Scandinavian settlers. The oldest find is the "Heavener Runestone," first documented in 1923. It is a 19th-century artifact made by a Scandinavian immigrant (possibly a Swede working ...
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