Terlinguaite is the naturally occurring mineral with formula Hg₂ Cl O. It is formed by the weathering of other

mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...

-containing minerals. It was discovered in 1900 in the

Terlingua Terlingua ( ) is a mining district and census-designated place (CDP) in southwestern Brewster County, Texas, United States. It is located near the Rio Grande and the villages of Lajitas and Study Butte, Texas, as well as the Mexican state ...

District of

Brewster County Brewster County is a county located in the U.S. state of Texas. It is in West Texas and its county seat (and only city) is Alpine. It is one of the nine counties that comprise the Trans-Pecos region, and borders Mexico. Brewster County is th ...

, Texas, for which it is named. Its color is yellow, greenish yellow, brown, or olive green.

References

Mercury minerals Halide minerals Geology of Texas Oxychlorides Monoclinic minerals Minerals in space group 15 {{halide-mineral-stub