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Myrickite

Chalcedony variety

Summary

Chalcedony variety

Myrickite at the 2012 [[Tucson Gem & Mineral Show]].

Myrickite is a local name used for a form of chalcedony with red inclusions of cinnabar. It has a Mohs hardness of 7. Although similar in color, this material should not be confused with the stone from China referred to as "Chicken Blood", as that material is a cinnabar stained serpentine with a hardness of 2.5-4. Unique to the United States, Myrickite is found at only one location in any quantity. During the early 1950s, Myrickite had been found in small quantities at the Manhattan Mine, located in Napa County, California, United States.

The name "Myrickite" is a lapidary term like "Montana Agate" or "Thunder Egg", not a mineral name. Myrickite is named after Francis Marion "Shady" Myrick who discovered it while prospecting in California's Death Valley in 1911.

References

"Myrickite". Hudson Institute of Mineralogy.
[http://www.mindat.org/loc-15218.html Manhattan Mine]
[http://www.ricenorthwmuseum.qwestoffice.net/myrickite_exhibit.php Myrickite Exhibit]: [[Rice Northwest Museum of Rocks and Minerals]]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

mercury(ii)-minerals geology-of-napa-county,-california quartz-gemstones chalcedony

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