The prediction of mineral solubilities in natural waters: The Na-K-Mg-Ca-H-Cl-SO4-OH-HCO3-CO3-CO2-H2O system to high ionic strengths at 25°C

Harvie, Charles E.; Møller, Nancy; Weare, John H.

doi:10.1016/0016-7037(84)90098-x

Cited by 1,183 publications

(640 citation statements)

References 82 publications

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“…A characteristic of the Pitzer equations is an ionic strength dependence of the pair interaction parameters. Modern forms of the Pitzer equations also include a theoretical accounting of higher-order electrical interactions (Harvie et al, 1984;Pitzer, 1975), which is described in terms of pair interactions for certain kinds of pairs of solute ions. However, the pair and triplet interactions are mainly described by parameters obtained by fitting to experimental data, as for osmotic coefficients of solutions of single aqueous electrolytes and pairs of aqueous electrolytes sharing a common ion, and for solubilities of various salt minerals.…”

Section: Pitzer's Equationsmentioning

confidence: 99%

“…Models which only pertain to a temperature of 25 • C are almost all built using as a core the model of Harvie et al (1984) for the Na-K-Mg-Ca-H-Cl-SO 4 -OH-HCO 3 -CO 3 -CO 2 -H 2 O system at this temperature. The Harvie model is notable because it provided the first integrated description in the Pitzer framework of activity coefficients and mineral solubilities for a reasonably large geochemical system.…”

Section: Pitzer's Equationsmentioning

confidence: 99%

“…Prior works had mainly focused on describing measurements of the osmotic coefficient (related to the activity of water) in pure liquid systems, or touched on the solubility of minerals in more limited systems. The Harvie et al (1984) model is often supplemented with the borate extension of Felmy and Weare (1986). Various extant low temperature databases (including the WIPP thermodynamic database) include other extensions.…”

Section: Pitzer's Equationsmentioning

confidence: 99%

“…In general, there is a small inconsistency between low temperature (25 • C) and high temperature Pitzer databases in that virtually all low temperature work uses the A φ value of 0.392 originally used by Harvie et al (1984) (who incorrectly reported a value of 0.39, see Plummer et al (1988) or Plummer and Parkhurst (1990)). Temperature functions describing A φ generally yield a value close to 0.391 when evaluated at 25 • C. It has been shown (Plummer and Parkhurst, 1990;Plummer et al, 1988) that small differences in this parameter can be significant in the computation of mineral solubilities.…”

Section: Pitzer's Equationsmentioning

confidence: 99%

“…It is necessary to establish some convention for their practical use. Harvie et al (1984) adopted the convention that λ n,H + = 0.…”

Section: Ascemdoeorg November 9 2010mentioning

confidence: 99%

See 4 more Smart Citations

Mathematical Formulation Requirements and Specifications for the Process Models

Steefel¹,

Moulton²,

Pau³

et al. 2010

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Section: Pitzer's Equationsmentioning

confidence: 99%

Section: Pitzer's Equationsmentioning

confidence: 99%

Section: Pitzer's Equationsmentioning

confidence: 99%

Section: Pitzer's Equationsmentioning

confidence: 99%

“…It is necessary to establish some convention for their practical use. Harvie et al (1984) adopted the convention that λ n,H + = 0.…”

Section: Ascemdoeorg November 9 2010mentioning

confidence: 99%

See 3 more Smart Citations

Mathematical Formulation Requirements and Specifications for the Process Models

Steefel¹,

Moulton²,

Pau³

et al. 2010

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The effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid/base chemistry: Implications for Eocene and Cretaceous ocean carbon chemistry and buffering

Hain

Sigman

Higgins

et al. 2015

Global Biogeochemical Cycles

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] enhances "ion pairing," which increases seawater buffering by increasing the concentration ratio of total to "free" (uncomplexed) carbonate ion. An increase in [Ca 2+ ], however, also causes a decline in carbonate ion to maintain a given Ω, thereby overwhelming the ion pairing effect and decreasing seawater buffering. ], a doubling of atmospheric CO 2 would require less carbon addition to the ocean/atmosphere system than under modern seawater composition. Moreover, increasing seawater buffering since the Cretaceous may have been a driver of evolution by raising energetic demands of biologically controlled calcification and CO 2 concentration mechanisms that aid photosynthesis.

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Retrieval of Compositional End‐Members From Mars Exploration Rover Opportunity Observations in a Soil‐Filled Fracture in Marathon Valley, Endeavour Crater Rim

Stein

Arvidson²,

O'Sullivan

et al. 2018

JGR Planets

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The Opportunity rover investigated a gentle swale on the rim of Endeavour crater called Marathon Valley where a series of bright planar outcrops are cut into polygons by fractures. A wheel scuff performed on one of the soil‐filled fracture zones revealed the presence of three end‐members identified on the basis of Pancam multispectral imaging observations covering ~0.4 to 1 μm: red and dark pebbles, and a bright soil clod. Multiple overlapping Alpha Particle X‐ray Spectrometer (APXS) measurements were collected on three targets within the scuff zone. The field of view of each APXS measurement contained various proportions of the Pancam‐based end‐members. Application of a log maximum likelihood method for retrieving the composition of the end‐members using the 10 APXS measurements shows that the dark pebble end‐member is compositionally similar to average Mars soil, with slightly elevated S and Fe. In contrast, the red pebble end‐member exhibits enrichments in Al and Si and is depleted in Fe and Mg relative to average Mars soil. The soil clod end‐member is enriched in Mg, S, and Ni. Thermodynamic modeling of the soil clod end‐member composition indicates a dominance of sulfate minerals. We hypothesize that acidic fluids in fractures leached and oxidized the basaltic host rock, forming the red pebbles, and then evaporated to leave behind sulfate‐cemented soil.

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The prediction of mineral solubilities in natural waters: The Na-K-Mg-Ca-H-Cl-SO4-OH-HCO3-CO3-CO2-H2O system to high ionic strengths at 25°C

Cited by 1,183 publications

References 82 publications

Mathematical Formulation Requirements and Specifications for the Process Models

Mathematical Formulation Requirements and Specifications for the Process Models

The effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid/base chemistry: Implications for Eocene and Cretaceous ocean carbon chemistry and buffering

Retrieval of Compositional End‐Members From Mars Exploration Rover Opportunity Observations in a Soil‐Filled Fracture in Marathon Valley, Endeavour Crater Rim

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