Journal ArticleDOI
Fluorapatite crystal growth from modified seawater solutions
TLDR
In this article, the growth of fluorapatite (FAP) in carbonate-free NaCl-CaCl2-NaF-Na2HPO4 solutions, at seawater calcium concentration, chlorinity, and pH.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1991-05-01. It has received 145 citations till now. The article focuses on the topics: Supersaturation & Growth rate.read more
Citations
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Journal ArticleDOI
Calcium orthophosphates: crystallization and dissolution.
Lijun Wang,George H. Nancollas +1 more
TL;DR: Some important parameters related to crystal nucleation and growth/dissolution including the supersaturation/undersaturation, pH, ionic strength and the ratio of calcium to phosphate activities are discussed.
Journal ArticleDOI
The phosphorus cycle, phosphogenesis and marine phosphate-rich deposits
TL;DR: In this article, a compilation of marine sedimentary phosphorus burial rates for the last 160 Myr suggests that natural variations have occurred that span one order of magnitude, which suggests that uniform interpretations with respect to the emplacement of major phosphorite deposits should be treated with caution.
Journal ArticleDOI
A new kinetic approach to modeling water-rock interaction: The role of nucleation, precursors, and Ostwald ripening
TL;DR: In this paper, a new approach to water-rock interaction is developed which replaces the assumption of partial equilibrium with a complete calculation of the rates at which minerals form and dissolve, and the evolution of reaction-flow systems towards equilibrium with respect to secondary phases is examined in terms of the important processes which generate and modify reactive surface areas of minerals.
Journal Article
Approaches to modeling of reactive transport in porous media
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Kinetic modeling of microbially-driven redox chemistry of subsurface environments : coupling transport, microbial metabolism and geochemistry
TL;DR: In this article, a one-dimensional, multi-component reactive transport model that accounts for the reaction couplings among the major redox and acid base elements, O, C, H, N, S, Mn, Fe and Ca, is presented.
References
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Journal ArticleDOI
The Growth of Crystals and the Equilibrium Structure of their Surfaces
TL;DR: In this paper, it was shown that the rate of growth of a surface containing dislocations is proportional to the square of the supersaturation for low values and to the first power for high values of the latter.
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Early oxidation of organic matter in pelagic sediments of the eastern equatorial Atlantic: suboxic diagenesis
Philip N. Froelich,Gary P. Klinkhammer,Michael L. Bender,Nile A. Luedtke,G.R. Heath,Doug Cullen,Paul Dauphin,Doug Hammond,Blayne Hartman,Val Maynard +9 more
TL;DR: Pore water profiles of total CO 2, pH, PO 3−4, NO − 3 plus NO − 2, SO 2− 4, S 2−, Fe 2+ and Mn 2+ have been obtained in cores from pelagic sediments of the eastern equatorial Atlantic under waters of moderate to high productivity as mentioned in this paper.
Book
Early Diagenesis: A Theoretical Approach
TL;DR: In this article, Berner developed the mathematical theory of early diagenesis, introducing a general diagenetic equation and discussing it in terms of each major diagenetics process, including diffusion, compaction, pore-water flow, burial advection, bioturbation, adsorption, radioactive decay and especially chemical and biochemical reactions.
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Iron deficiency limits phytoplankton growth in the north-east Pacific subarctic
TL;DR: In this article, the authors reported that the addition of nmol amounts of dissolved iron resulted in the nearly complete utilization of excess NO3, whereas in the controls, without added Fe, only 25% of the available NO3 was used.
Journal ArticleDOI
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.