Mercury sulfide Mercury sulfide Mercury sulfide, mercuric sulfide, mercury sulphide, or mercury(II) sulfide is a chemical compound composed of the chemical elements mercury and sulfur. It is represented by the chemical formula HgS. It is virtually insoluble in water. HgS is dimorphic with two crystal forms: Crystals of red, α-HgS, are optically active. This is caused by the Hg-S helices in the structure. β-HgS is precipitated as a black powder when HS is bubbled through solutions of Hg(II) salts. β-HgS is unreactive to all but concentrated acids. Mercury metal is produced from the cinnabar ore by roasting in air and condensing the
Cinnabar Theater Cinnabar Theater The Cinnabar Theater, located in Petaluma, California, is a professional non-profit theater producing opera and musical theatre, drama and a chamber music series in a 120-seat venue, under the auspices of the Cinnabar Arts Corporation. The venue is also home to the Young Repertory Theater (founded in 1983), the longest running and largest youth performing arts program in Sonoma County. The company's Music Director is Mary Chun. The theater, a 1908 schoolhouse, was purchased by Marvin Klebe (1935–1999) in 1970. Klebe converted it into a theater, which opened in 1972 as a venue to produce opera and musical