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 |
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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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