Journal ArticleDOI
The chemistry of iron in geothermal systems in iceland
TLDR
The concentration of iron in Icelandic geothermal waters lies in the range of about 0.004-0.3 ppm as mentioned in this paper and the concentration of H2S shows a very good correlation with the temperature of the geothermal water.About:
This article is published in Journal of Volcanology and Geothermal Research.The article was published on 1982-12-01. It has received 34 citations till now. The article focuses on the topics: Marcasite & Lepidocrocite.read more
Citations
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Journal ArticleDOI
The chemistry of geothermal waters in Iceland. I. Calculation of aqueous speciation from 0° to 370°C
TL;DR: In this article, a computer program is developed to calculate the composition and aqueous speciation of geothermal reservoir waters including pH, redox potential and gas partial pressures, which is specifically suited to handle geochemical data from wet-steam wells, hot-water wells and boiling hot springs, but it may also be used for non-thermal waters.
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The chemistry of geothermal waters in Iceland. II. Mineral equilibria and independent variables controlling water compositions
TL;DR: The major element chemistry of Icelandic geothermal waters is predictable provided two parameters are known as mentioned in this paper, namely temperature and the mobility of chloride, which is known to have a significant effect on water chemistry.
Journal ArticleDOI
Chemical equilibria in icelandic geothermal systems—Implications for chemical geothermometry investigations
TL;DR: In this paper, the authors focus on assessing the overall water composition with respect to mineral equilibria, rather than attempting to distinguish geothermal waters from shallow waters by a classification involving the relative abundance of major anions and major cations.
Journal ArticleDOI
Dissolution of primary basaltic minerals in natural waters: saturation state and kinetics
TL;DR: In this paper, the state of saturation of olivine, orthopyroxene and plagioclase of variable composition has been assessed in various types of natural waters in Iceland including river waters, groundwater and geothermal waters with temperatures up to 250°C.
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The chemistry of trace elements in surface geothermal waters and steam, Iceland
TL;DR: In this paper, the geochemistry of trace elements in surface geothermal fluids in Iceland was studied and the sampled fluids included hot springs, mud pots, steam vents and soil solutions with temperatures ranging from 4 to 100°C, pH between 2.01 and 9.10 and total dissolved solids between 86 and 4375 ppm.
References
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ReportDOI
Thermodynamic Properties of Minerals and Related Substances at 298.15 K and 1 Bar (105 Pascals) Pressure and at Higher Temperatures
TL;DR: A report about values for the entropy, molar volume, and for the enthalpy and Gibbs energy of formation for the elements and minerals and substances at 298.15 K was given in this paper.
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Slaty cleavage and related strain in Martinsburg Slate, Delaware Water Gap, New Jersey
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Thermodynamics of hydrothermal systems at elevated temperatures and pressures
TL;DR: In this article, sufficient thermodynamic data are available to permit calculation of equilibrium constants for a large number of hydrothermal reactions, where the calculations involve entropy estimates, application of average heat capacities, and/or assumptions concerning the temperature dependence of thermodynamic variables and the relative importance of electrostatic and non-electrostatic interaction among the species.
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Pyrite Framboid Formation; Laboratory Synthesis and Marine Sediments
R. E. Sweeney,I. R. Kaplan +1 more
TL;DR: Pyrite framboids were found to form only on spherical nuclei as mentioned in this paper, and both chemical and textural evidence was provided for the pathway of pyrite formation.