Silica-carbonate alteration of serpentine: Wall rock alteration in mercury deposits of the California Coast Ranges
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Abstract
Chemical, isotopic, and thermodynamic properties have been measured of CO 2-rich ground waters in the central California Coast Ranges. The acidic CO 2-rich waters react with serpentine to form silica-carbonate rock, the host rock of many mercury deposits in the Coast Range of California. In part the waters are of a metamorphic origin and in part the waters are locally derived meteoric waters. The CO 2 is entirely derived from metamorphic reactions at depth. Depending on the relative importance of several reactions, the relative abundances of silica and carbonate minerals vary in the silica-carbonate rock. If the CO 2-rich fluids react directly with peridotite or dunite, massive magnesite deposits may form. © 1973 Society of Economic Geologists, Inc.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Silica-carbonate alteration of serpentine: Wall rock alteration in mercury deposits of the California Coast Ranges |
| Series title | Economic Geology |
| DOI | 10.2113/gsecongeo.68.3.388 |
| Volume | 68 |
| Issue | 3 |
| Year Published | 1973 |
| Language | English |
| Publisher | Society of Economic Geologists |
| Description | 11 p. |
| First page | 388 |
| Last page | 398 |
| Country | United States |
| State | California |
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