Myrickite

Myrickite is a local name used for a form of chalcedony with red inclusions of cinnabar.^[1] 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.^{[citation needed]} Unique to the United States, Myrickite is found at only one location in any quantity.^{[citation needed]} During the early 1950s,^{[citation needed]} Myrickite had been found in small quantities at the Manhattan Mine,^[2] located in Napa County, California, United States.

Myrickite at the 2012 Tucson Gem & Mineral Show.

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.^{[3][dead link]}