Calc-silicate mineralization in active geothermal systems
The detailed study of calc-silicate mineral zones and coexisting phase relations in the Cerro Prieto geothermal system were used as examples for thermodynamic evaluation of phase relations among minerals of variable composition and to calculate the chemical characteristics of hydrothermal solutions compatible with the observed calc-silicate assemblages. In general there is a close correlation between calculated and observed fluid compositions. Calculated fugacities of O{sub 2} at about 320{degrees}C in the Cerro Prieto geothermal system are about five orders of magnitude less than that at the nearby Salton Sea geothermal system. This observation is consistent with the occurrence of Fe{sup 3+} rich epidotes in the latter system and the presence of prehnite at Cerro Prieto.
- Research Organization:
- Stanford Univ., CA (USA). Dept. of Geology; California Univ., Riverside (USA). Inst. of Geophysics and Planetary Physics; Michigan Technological Univ., Houghton (USA). Dept. of Geology and Geological Engineering
- DOE Contract Number:
- FC07-80ID12145
- OSTI ID:
- 5794604
- Report Number(s):
- UCR/IGPP-83/7; ON: DE83016724
- Country of Publication:
- United States
- Language:
- English
Similar Records
Active metasomatism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low pressure/temperature metamorphic facies series
Active metasomatism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low-pressure, low-temperature metamorphic facies series
Active hydrothermal metamorphism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low P/T facies series. [Abstract only]
Technical Report
·
Fri Dec 31 23:00:00 EST 1982
·
OSTI ID:6011812
Active metasomatism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low-pressure, low-temperature metamorphic facies series
Journal Article
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Sat Dec 31 23:00:00 EST 1983
· Geology; (United States)
·
OSTI ID:7057152
Active hydrothermal metamorphism in the Cerro Prieto geothermal system, Baja California, Mexico: a telescoped low P/T facies series. [Abstract only]
Journal Article
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Mon Feb 28 23:00:00 EST 1983
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OSTI ID:6369160
Related Subjects
15 GEOTHERMAL ENERGY
150202* -- Geology & Hydrology of Geothermal Systems-- Non-USA-- (-1989)
CERRO PRIETO GEOTHERMAL FIELD
CHEMICAL PROPERTIES
GEOTHERMAL FIELDS
Geothermal Legacy
MINERALIZATION
MINERALOGY
OXYGEN COMPOUNDS
PHASE STUDIES
SALTON SEA GEOTHERMAL FIELD
SILICATES
SILICON COMPOUNDS
THERMODYNAMICS
150202* -- Geology & Hydrology of Geothermal Systems-- Non-USA-- (-1989)
CERRO PRIETO GEOTHERMAL FIELD
CHEMICAL PROPERTIES
GEOTHERMAL FIELDS
Geothermal Legacy
MINERALIZATION
MINERALOGY
OXYGEN COMPOUNDS
PHASE STUDIES
SALTON SEA GEOTHERMAL FIELD
SILICATES
SILICON COMPOUNDS
THERMODYNAMICS