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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 ...
"Yogo sapphire" is the preferred term for gems found in the Yogo Gulch, whereas "Montana sapphire" generally refers to gems found in other Montana locations. More gem-quality sapphires are produced in Montana than anywhere else in North America. Sapphires were first discovered in Montana in 1865, in alluvium along the Missouri River. Finds in ...
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 hide
The name is a portmanteau, formed from Mo (Missouri), zark , and ite (meaning rock). Mozarkite consists essentially of silica ( quartz - SiO 2 ) with varying amounts of chalcedony . It has won distinction as a particular form or variety of chert because of its unique variation of colors and its ability to take a high polish.
It is located south of Columbia, Missouri and the more well-known Rock Bridge Memorial State Park. The conservation area is named after the three streams which flow through it: Turkey Creek, Bass Creek, and Bonne Femme Creek. [1] Its nearly 1500 acres are mostly forested and managed by the Missouri Department of Conservation. [2]
Loose Creek is a stream in Osage County, Missouri in the United States. [ 1 ] The stream headwaters are at 38°28′18″N 91°53′09″W / 38.47167°N 91.88583°W / 38.47167; -91.88583 and the confluence with the Missouri River is at 38°37′09″N 91°54′31″W / 38.61917°N 91.90861°W / 38.61917; -
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Bahia Emerald [2]; Carolina Emperor, [3] [4] 310 carats uncut, 64.8 carats cut; discovered in the United States in 2009, resides in the North Carolina Museum of Natural Sciences, Raleigh, NC, US