| Many mercury deposits around the world contain small but significant amounts of petroleum in association with cinnabar. Geological and geochemical investigations of mercury deposits in the northern California Coast ranges (Mayacmas, Wilbur Springs, Knoxville, and New Almaden districts) were undertaken to document the association, determine petroleum chemical compositions, and establish the geochemical setting of such deposits in order to formulate a genetic model. Petroleum (typically ;Silica-carbonate rock, an alteration product of serpentinite, is commonly the ore host. Geochemical modelling indicates that this alteration can arise from interaction with a CO;In summary, the presence of free CO... |
