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• W2963800954 endingPage "519" @default.
• W2963800954 startingPage "505" @default.
• W2963800954 abstract "The incorporation of magnesium and sulfate in calcite is frequently used to characterize and trace the environmental conditions occurring during carbonate mineral formation. Although both ions are simultaneously incorporated in the growing calcite, the effect of sulfate on magnesium incorporation in calcite is still under-explored. In this study, we examine the Mg incorporation in low-Mg calcite as a function of growth rate at 25 °C and 1 bar pCO2 in the presence and absence of aqueous sulfate. The obtained results suggest that high calcite growth rates induce a significant increase in the partitioning coefficient of Mg between the precipitated low-Mg calcite and aqueous solution (i.e. DMg=nMg/nCacalcite[Mg2+]/[Ca2+]solution). Obtained DMg values exhibit similar dependence to mineral growth rate for experiments performed in the presence and absence of sulfate, however a systematic shift to lower DMg values is observed for calcites formed in the presence of sulfate. The lower DMg values of calcites formed in sulfate-bearing solutions are attributed to the incorporated SO4 ions which provoke expansion in the unit cell along the c-axis of the newly formed calcite. A larger unit cell is unfavorable for the substitution of Ca by smaller Mg ions in calcite. The coupled effect of (i) sulfate uptake during calcite growth and (ii) precipitation rate on DMg can be expressed by the equation DMg=0.03726-0.02345×-logrp-7-XSO4×0.004607+0.002109×-logrp-7; (−8 ≤ log(rp) ≤ −7; 0 ≤ Xso4 ≤ 2.6; T = 25 °C) and is valid for 0.01 ≤ DMg ≤ 0.04. In analogy to Mg also SO4 ions are inhibiting calcite growth, thus promoting the formation of aragonite due to adsorption phenomena and blocking of calcite surface sites. These results improve our understanding on physicochemical parameters controlling CaCO3 composition and mineral polymorphism and are discussed in their relevance for the use of magnesium and sulfate environmental proxies in natural surroundings." @default.
• W2963800954 created "2019-07-30" @default.
• W2963800954 creator A5009488476 @default.
• W2963800954 creator A5042828801 @default.
• W2963800954 creator A5067084286 @default.
• W2963800954 creator A5073591203 @default.
• W2963800954 date "2019-11-01" @default.
• W2963800954 modified "2023-10-12" @default.
• W2963800954 title "Effect of sulfate on magnesium incorporation in low-magnesium calcite" @default.
• W2963800954 cites W1497067638 @default.
• W2963800954 cites W1500692602 @default.
• W2963800954 cites W1623185207 @default.
• W2963800954 cites W1636909658 @default.
• W2963800954 cites W1672780680 @default.
• W2963800954 cites W1682777677 @default.
• W2963800954 cites W1872860201 @default.
• W2963800954 cites W1965571863 @default.
• W2963800954 cites W1969327214 @default.
• W2963800954 cites W1976401495 @default.
• W2963800954 cites W1976556587 @default.
• W2963800954 cites W1977099663 @default.
• W2963800954 cites W1977773292 @default.
• W2963800954 cites W1977881061 @default.
• W2963800954 cites W1980645312 @default.
• W2963800954 cites W1981926445 @default.
• W2963800954 cites W1981948997 @default.
• W2963800954 cites W1982042911 @default.
• W2963800954 cites W1987036576 @default.
• W2963800954 cites W1987898252 @default.
• W2963800954 cites W1990250430 @default.
• W2963800954 cites W1990890181 @default.
• W2963800954 cites W1993749654 @default.
• W2963800954 cites W1996167059 @default.
• W2963800954 cites W1998837657 @default.
• W2963800954 cites W2002691206 @default.
• W2963800954 cites W2007935173 @default.
• W2963800954 cites W2011556233 @default.
• W2963800954 cites W2011751579 @default.
• W2963800954 cites W2012429378 @default.
• W2963800954 cites W2012433025 @default.
• W2963800954 cites W2017386151 @default.
• W2963800954 cites W2019234824 @default.
• W2963800954 cites W2024400872 @default.
• W2963800954 cites W2027818902 @default.
• W2963800954 cites W2030245491 @default.
• W2963800954 cites W2031073903 @default.
• W2963800954 cites W2033443500 @default.
• W2963800954 cites W2034629014 @default.
• W2963800954 cites W2038941835 @default.
• W2963800954 cites W2039025613 @default.
• W2963800954 cites W2044671223 @default.
• W2963800954 cites W2045594097 @default.
• W2963800954 cites W2046020514 @default.
• W2963800954 cites W2046227584 @default.
• W2963800954 cites W2055095291 @default.
• W2963800954 cites W2061487695 @default.
• W2963800954 cites W2062746313 @default.
• W2963800954 cites W2066649687 @default.
• W2963800954 cites W2066793094 @default.
• W2963800954 cites W2076382171 @default.
• W2963800954 cites W2077395600 @default.
• W2963800954 cites W2079428926 @default.
• W2963800954 cites W2082893436 @default.
• W2963800954 cites W2083172323 @default.
• W2963800954 cites W2089326088 @default.
• W2963800954 cites W2102291170 @default.
• W2963800954 cites W2103422914 @default.
• W2963800954 cites W2121365167 @default.
• W2963800954 cites W2133038839 @default.
• W2963800954 cites W2134971691 @default.
• W2963800954 cites W2138169388 @default.
• W2963800954 cites W2147289257 @default.
• W2963800954 cites W2148161525 @default.
• W2963800954 cites W2152761582 @default.
• W2963800954 cites W2155783817 @default.
• W2963800954 cites W2168428105 @default.
• W2963800954 cites W2168649638 @default.
• W2963800954 cites W2169020935 @default.
• W2963800954 cites W2176593032 @default.
• W2963800954 cites W2385435147 @default.
• W2963800954 cites W2493967015 @default.
• W2963800954 cites W2527407662 @default.
• W2963800954 cites W2582697008 @default.
• W2963800954 cites W2602771509 @default.
• W2963800954 cites W2607707273 @default.
• W2963800954 cites W2613520117 @default.
• W2963800954 cites W2756347781 @default.
• W2963800954 cites W2766928563 @default.
• W2963800954 cites W2795827687 @default.
• W2963800954 cites W2809896753 @default.
• W2963800954 cites W2888223355 @default.
• W2963800954 cites W2890265063 @default.
• W2963800954 cites W2910290694 @default.
• W2963800954 cites W4210585880 @default.
• W2963800954 cites W830933308 @default.
• W2963800954 doi "https://doi.org/10.1016/j.gca.2019.07.024" @default.
• W2963800954 hasPublicationYear "2019" @default.
• W2963800954 type Work @default.

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