Amorphization of S, Cl‐Salts Induced by Martian Dust Activities

Wang, Alian; Yan, Y. C.; Dyar, Darby; Houghton, Jennifer; Farrell, W. M.; Jolliff, Bradley L.; McLennan, Scott M.; Shi, Erbin; Qu, Hongyi

doi:10.1029/2020je006701

Cited by 11 publications

(12 citation statements)

References 100 publications

(249 reference statements)

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“…Sulfates and chlorides are among the most common salts deposited both in the Qaidam Basin and on Mars. 53 The sulfate and chloride components sampled from the Qaidam Basin have been found to exist in a form with a high degree of hydration in spite of the arid conditions, and such hydrates have also been found on Mars. [36][37][38] An important type of Martian sulfates is in the form of Mg sulfates.…”

Section: Discussionmentioning

confidence: 99%

Surface solvation of Martian salt analogues at low relative humidities

Kong

Zhu

Shavorskiy

et al. 2022

Environ. Sci.: Atmos.

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Section: Discussionmentioning

confidence: 99%

Surface solvation of Martian salt analogues at low relative humidities

Kong

Zhu

Shavorskiy

et al. 2022

Environ. Sci.: Atmos.

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“…The typical Raman and MIR peaks of Mg(ClO 3 ) 2 and MgCO 3 were not seen from the remaining salts of 7hr‐ESD‐on‐MgCl 2 , perhaps due to their presence as amorphous forms because MgCl 2 was observed to become amorphous after 7 hr‐ESD (A. Wang, Yan, Dyar, et al., 2020). XRD analyses of remaining salts of ESD‐on‐KCl and ESD‐on‐MgCl 2 showed no detection of chlorates or carbonates suggesting low concentrations (<1 mol%).…”

Section: Resultsmentioning

confidence: 99%

“…First, 0.0001 was used as the ESD occurrence probability during GDS (Table S5c in Supporting Information S1), which was arbitrarily selected in an early study (A. Wang, Yan, Dyar, et al, 2020), but was retained to keep the consistency throughout our studies. A probability of 1-2 orders of magnitude higher is entirely possible, pending the real measurement of electrical properties of dust activities on Mars in the future, like the payloads prepared by Farrell et al (2000) for NASA and Harrison et al (2016) for ESA missions.…”

Section: Scale To Mars From the Quantifications Of This Studymentioning

confidence: 99%

Quantification of Carbonates, Oxychlorines, and Chlorine Generated by Heterogeneous Electrochemistry Induced by Martian Dust Activity

Wang

Jackson

Sturchio

et al. 2023

Geophysical Research Letters

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Heterogeneous electrochemistry induced by Martian dust activity is an important type of atmosphere‐surface interaction that affects geochemical processes at the Martian surface and in the Martian atmosphere. We have experimentally demonstrated that heterogeneous electrochemistry stimulated by mid‐strength dust events can decompose common chloride salts, which is accompanied by the release of chlorine atoms into the atmosphere and the generation of (per)chlorates (chlorates and perchlorates) and carbonates. In this study, we present quantitative analyses on the above products from 26 heterogeneous electrochemical experiments on chloride salts. Based on these quantifications, our calculation indicates that such atmosphere‐surface interaction during a portion of Amazonian period could accumulate the observed abundance of (per)chlorates, carbonates, and HCl by landed and orbital missions, and thus can be considered as a major driving force of the global chlorine‐cycle on Mars. This study emphasizes the importance of measuring the electrical properties of dust activity on Mars.

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“…Wu et al [ 44 ] found that the oxidation power of ESD electron is three orders of magnitude higher than that of UVC photon. Besides, ESD processes are also responsible for the amorphization of S‐ and Cl‐bearing compounds, [ 47 ] which is commonly accompanied by the dehydration of these salts. Thus, it is proven that ESD activity is of great importance in the sulfur cycle, which has been observed in the studied meteorite, ClO 4 2− .…”

Section: Resultsmentioning

confidence: 99%

Mineralogy of the RBT 04262 Martian meteorite as determined by micro‐Raman and micro‐X‐ray fluorescence spectroscopies

Huidobro

Aramendia

García‐Florentino

et al. 2021

J Raman Spectroscopy

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Martian meteorites and terrestrial analogs represent the only samples available on Earth for studying mineralogy features of our neighbor planet Mars. This work characterizes the Roberts Massif (RBT) 04262 Martian meteorite by using mainly Raman spectroscopy. By means of this technique, it was confirmed that the meteorite matrix is composed by pyroxene and plagioclase (converted to maskelynite due to the shock pressure). Olivine-coarse grains embedded in the matrix were also observed. These grains were coated by hydrated magnesium and calcium sulfates, which would belong to the Mars sulfate deposits or to the terrestrial weathering. Although the sulfates could be formed on Mars due to the oxidation of sulfides or elemental sulfur along the sulfur Mars cycle, their distribution along cracks and fractures confirm that are weathering products. However, other S-bearing compounds that belong to Mars were found, such as elemental sulfur and a thermally transformed iron sulfide.Finally, the calcium phosphate merrillite and titanomagnetite were also detected. Taking this into account, the minerals found were classified into primary minerals that belong to Mars (pyroxene, olivine, elemental sulfur, and titanomagnetite), secondary ones that are alteration products of the primary minerals (maskelynite, iron sulfide, and merrillite), and terrestrial weathering products (sulfates gypsum and epsomite).

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Amorphization of S, Cl‐Salts Induced by Martian Dust Activities

Cited by 11 publications

References 100 publications

Surface solvation of Martian salt analogues at low relative humidities

Surface solvation of Martian salt analogues at low relative humidities

Quantification of Carbonates, Oxychlorines, and Chlorine Generated by Heterogeneous Electrochemistry Induced by Martian Dust Activity

Mineralogy of the RBT 04262 Martian meteorite as determined by micro‐Raman and micro‐X‐ray fluorescence spectroscopies

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