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 Quicksilver Theater Company under the leadership of Richard Blake. The current conductor, Mary Chun (who also serves as conductor of San Francisco's new music ensemble Earplay), has led performances for Hawaii Opera Theatre and served on the conducting staffs of San Francisco Opera, the Los Angeles Music Center Opera, The Opera Theatre of Saint Louis, Belgium's La Monnaie, the Théâtre du Châtelet in Paris and the Opéra de Lyon, where she was also the Director of Musical Studies for Music Director Kent Nagano. She has conducted Cinnabar productions of "She Loves Me" (2011), "Don Giovanni" (2012), "Carmen" (2013), "The Marriage