Cinnabar Cinnabar Cinnabar () and cinnabarite (), likely deriving from the ("kinnabari"), refer to the common bright scarlet to brick-red form of mercury(II) sulfide (HgS) that is the most common source ore for refining elemental mercury, and is the historic source for the brilliant red or scarlet pigment termed vermilion and associated red mercury pigments. Cinnabar generally occurs as a vein-filling mineral associated with recent volcanic activity and alkaline hot springs. The mineral resembles quartz in symmetry and in its exhibiting birefringence; cinnabar has a mean refractive index of approximately 3.2, a hardness between 2.0 and 2.5, and a specific gravity
Archibald C. Godwin 6'6" Godwin as an Indian agent, and Charles F. Winslow after visiting the area wrote that they were "under Mr. Godwin's complete control." There were hot springs on the property which later became known as "The Geysers", and Godwin built "The Geysers Resort Hotel" to encourage visitors. He discovered that his land possessed rich cinnabar ore deposits and in 1859 filed mining claims, which he had to defend in court as others disputed his right to mine quicksilver. Godwin obtained a legal license after passing exams and successfully represented himself in court in Santa Rosa. He became involved in local