Effect of glycine as an impurity on the properties of Epsomite single crystals

Kavitha, J.M.

doi:10.9790/4861-0544553

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…To our knowledge, no systematic studies of Gly crystallization in freezing saline environments have been performed. Since Gly is capable of incorporating into inorganic hydrated mineral structures (Kavitha & Mahadevan, 2013), such studies could provide new insights into the nature and origin of the non-ice surface mineralogy of icy bodies as well as the early prebiotic stages involved in the origin of life as discussed in Section 4.4.…”

Section: Implications For Life On Europamentioning

confidence: 99%

Laboratory exploration of mineral precipitates from Europa's subsurface ocean

Thompson¹,

Kennedy²,

Butler³

et al. 2021

J Appl Cryst

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The precipitation of hydrated phases from a chondrite-like Na–Mg–Ca–SO4–Cl solution is studied using in situ synchrotron X-ray powder diffraction, under rapid- (360 K h−1, T = 250–80 K, t = 3 h) and ultra-slow-freezing (0.3 K day−1, T = 273–245 K, t = 242 days) conditions. The precipitation sequence under slow cooling initially follows the predictions of equilibrium thermodynamics models. However, after ∼50 days at 245 K, the formation of the highly hydrated sulfate phase Na2Mg(SO4)2·16H2O, a relatively recent discovery in the Na2Mg(SO4)2–H2O system, was observed. Rapid freezing, on the other hand, produced an assemblage of multiple phases which formed within a very short timescale (≤4 min, ΔT = 2 K) and, although remaining present throughout, varied in their relative proportions with decreasing temperature. Mirabilite and meridianiite were the major phases, with pentahydrite, epsomite, hydrohalite, gypsum, blödite, konyaite and loweite also observed. Na2Mg(SO4)2·16H2O was again found to be present and increased in proportion relative to other phases as the temperature decreased. The results are discussed in relation to possible implications for life on Europa and application to other icy ocean worlds.

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Section: Implications For Life On Europamentioning

confidence: 99%

Laboratory exploration of mineral precipitates from Europa's subsurface ocean

Thompson¹,

Kennedy²,

Butler³

et al. 2021

J Appl Cryst

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“…2 The glycine molecule is found to form many compounds with metal sulfates, metal halogenides and acids. The epsomite (MgSO4:7H2O), as a source of Mg2+ ions has wide applications in medicine (acute management of cardiac arrhythmia) and agriculture (fertilizer) 3 . This material, when doped with selected activators yields efficient for nonlinear optical (NLO) applications.…”

Section: Introductionmentioning

confidence: 99%

Investigations on optical, theoretical, mechanical and dielectric properties of newly synthesised optical single crystal - trisglycine epsomite

2018

IJCTR

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A novel, semi-organic peculiar optical crystal trisglycine epsomite (TGE) has been synthesized from aqueous solution by conventional solution growth method at room temperature. Single crystal XRD study has been carried out to categorize the crystal system and lattice parameters. PXRD study reveals the crystalline nature of the crystal. Optical spectral studies have been conducted to locate the cut-off wavelength, absorption coefficient, extinction coefficient and optical band gap of the material. The dielectric constant and dielectric loss as a function of frequency were measured. The solid state parameters of the title compound such as valence electron, plasma energy, Penn gap and Fermi energy were calculated theoretically using the empirical relation and deduced their electronic polarizability, found to be better-quality than KDP. The mechanical behaviors of TGE were studied by utilizing Vickers micro hardness tester.

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