Mercury (element) long periods at elevated temperatures. It reverts to the elements upon heating near 400 °C, as was demonstrated by Joseph Priestley in an early synthesis of pure oxygen. Hydroxides of mercury are poorly characterized, as they are for its neighbors gold and silver. Being a soft metal, mercury forms very stable derivatives with the heavier chalcogens. Preeminent is mercury(II) sulfide, HgS, which occurs in nature as the ore cinnabar and is the brilliant pigment vermillion. Like ZnS, HgS crystallizes in two forms, the reddish cubic form and the black zinc blende form. The latter sometimes occurs naturally as metacinnabar. Mercury(II)
Cinnabar Theater of Figaro" (2014), and others. Notable among the many dramatic works produced at Cinnabar was a 2004 production of Tony Kushner's "The Illusion" (1988) adapted from "L’Illusion Comique" by 17th-century French playwright Pierre Corneille. The Cinnabar production featured actor Jeffrey Weissman. In 2013, Broadway veteran and film/television actor Charles Siebert played the role of Gregory Solomon in the Cinnabar production of Arthur Miller's "The Price." 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