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The third-largest producer of quicksilver in the area was the Study Butte Mine, located five miles east of Terlingua. Cinnabar was discovered here in 1902 and mined from 1905. The property was operated in World War II by the Texas Mercury Co. Cinnabar occurs in ore-bearing fractures or veins within a syenite intrusion.
Cinnabar is the more stable form, and is a structure akin to that of HgO: each Hg center has two short Hg−S bonds (each 2.36 Å), and four longer Hg···S contacts (with 3.10, 3.10, 3.30 and 3.30 Å separations). In addition, HgS is found in a black, non-cinnabar polymorph (metacinnabar) that has the zincblende structure. [5]
Genuine vermilion pigment today comes mostly from China; it is a synthetic mercuric sulfide, labeled on paint tubes as PR-106 (Red Pigment 106). The synthetic pigment is of higher quality than vermilion made from ground cinnabar, which has many impurities. The pigment is very toxic, and should be used with great care. [16]
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Denver City is a city located in Yoakum County in the far western portion of the U.S. state of Texas, near the New Mexico boundary. It is named for the petroleum company Denver Productions. The population was 4,470 at the 2020 census, [4] down from 4,479 at the 2010 census. The city is located at the intersection of Texas State Highways 214 and 83.
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Cinnabar Railway Station State School opened on 2 May 1916, but was renamed in July 1916 as Cinnabar State School. It closed in 1971. [ 9 ] The school was at 362 Cinnabar Road ( 26°07′11″S 152°11′10″E / 26.1196°S 152.1860°E / -26.1196; 152.1860 ( Cinnabar State