SHEPHARD T. TAYLOR, , AN ARCHITECT RESIDING IN BLOOMSBURY., Our Own Correspondent., -Our Correspondent., Our Correspondent., H. A. NEWTON, , HENRY L. CRIPPS., RATEPAYER., HOOD BARRS., HOLT S. HALLETT., LEWIS T. DIBDIN., ARGYLL., LAMBTON LORAINE, , NEMO., AN EPSOMITE.,
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1893 - Gale Group | TDA
Encarnación Ruíz-Agudo, Christine V. Putnis, Carlos Rodríguez‐Navarro,
... carboxylates were tested as potential crystallization inhibitors for epsomite (MgSO4·7H2O). Epsomite nucleation is strongly inhibited in the presence of ... and molecular modeling of additive adsorption on specific epsomite (hkl) faces are used to identify how these additives inhibit epsomite crystallization. Additives attach preferentially on epsomite {110} faces, at edges of monolayer steps parallel ... groups of additive molecules and water molecules in epsomite {110} appears to be the principal mechanism of ...
Tópico(s): Clay minerals and soil interactions
2008 - American Chemical Society | Crystal Growth & Design
Linfei Yang, Lidong Dai, Heping Li, Haiying Hu, Meiling Hong, Xinyu Zhang,
The phase stability of epsomite under a high temperature and high pressure were explored through Raman spectroscopy and electrical conductivity measurements in a diamond anvil ... 12.8 GPa. Our results verified that the epsomite underwent a pressure-induced phase transition at ~5. ... and electrical conductivity. The dehydration process of the epsomite under high pressure was monitored by the variation ... of ~1.3 GPa, it was found the epsomite (MgSO4·7H2O) started to dehydrate at ~343 K, ... between the dehydration temperature and the pressure for epsomite.
Tópico(s): Clay minerals and soil interactions
2020 - Multidisciplinary Digital Publishing Institute | Crystals
Carolina Cardell, Antonio Sánchez‐Navas, F.J. Olmo, J.D. Martı́n-Ramos,
... occurring in Na2SO4·10H2O (mirabilite) and MgSO4·7H2O (epsomite) at room conditions by using powder X-ray ... dehydration starts with the initial radiation impacts, unlike epsomite. Thermodehydration and photodehydration of mirabilite is a non- ... through an amorphous-mediated step. Radiation damage in epsomite leads to isothermal dehydration, whereas non-isothermal dehydration occurs when epsomite is thermally damaged. In both cases, no amorphous ... thermal and radiation stability is lower than in epsomite. These results have important implications for the prevention ...
Tópico(s): Conservation Techniques and Studies
2007 - American Chemical Society | Analytical Chemistry
T. B. McCord, Thomas M. Orlando, Glenn Teeter, G. B. Hansen, M. T. Sieger, Nikolay G. Petrik, Lisa Van Keulen,
... and radiolytic stability of the hydrated salt minerals epsomite (MgSO 4 ·7H 2 O), mirabilite (Na 2 ... eV for removal of the hydration water for epsomite, natron, and mirabilite, respectively. A simple extrapolation indicates that at Europa surface temperatures (<130 K), epsomite should remain hydrated over geologic timescales (∼10 11 – ... after 100 eV electron‐beam irradiation of dehydrated epsomite and mirabilite samples, whereas products such as O ... electron‐induced damage cross section of mirabilite and epsomite is ∼10 −19 cm 2 . The overall radiolytic ...
Tópico(s): Astro and Planetary Science
2001 - American Geophysical Union | Journal of Geophysical Research Atmospheres
Óscar Cabestrero, Pablo del Buey, M. Esther Sanz‐Montero,
... crusts are primary bloedite (Na2Mg(SO4)2·4H2O), epsomite (MgSO4·7H2O), gypsum (CaSO4·2H2O) and mirabilite (Na2SO4· ... grow incorporatively within the matgrounds. Displacive and incorporative epsomite grows on previous bloedite crystals and also on ... at the brine-air interface over bloedite and epsomite. Hexahydrite and thenardite are formed due to dehydration of epsomite and mirabilite, respectively. Hydrochemical modeling with PHREEQC indicated ... forming from brines undersaturated with respect to bloedite, epsomite and mirabilite, which suggests that the microorganisms contribute ...
Tópico(s): Geochemistry and Elemental Analysis
2018 - Elsevier BV | Sedimentary Geology
J.C. Elvira-León, J.M. Chimenos, C. Isábal, Joaquín Montón Lecumberri, J. Formosa, Laia Haurie,
The effect of epsomite as flame retardant for wood has been investigated and compared with a commercial boron salt. Both flame retardants have been introduced into wood samples by vacuum impregnation. Epsomite is a hydrated sulphate salt with a water ... high solubility it was possible to obtain elevated epsomite loadings in comparison with the borax salt. Flame ... test). The results showed that the addition of epsomite increases the limiting oxygen index, delays the time ...
Tópico(s): Polymer Nanocomposites and Properties
2016 - Elsevier BV | Construction and Building Materials
B.R. Kilmer, Timothy C. Eberl, Brent Cunderla, Fei Chen, B. C. Clark, Mark Schneegurt,
Abstract Hot Lake (Oroville, WA) is an athalassohaline epsomite lake that can have precipitating concentrations of MgSO 4 salts, mainly epsomite. Little biotic study has been done on epsomite lakes and it was unclear whether microbes isolated from epsomite lakes and their margins would fall within recognized ... metabolisms and clones of Legionella and Coxiella . These epsomite lake microbial communities seem to be divided between ...
Tópico(s): Protist diversity and phylogeny
2014 - Cambridge University Press | International Journal of Astrobiology
Weiqiang Li, Brian L. Beard, Clark M. Johnson,
The equilibrium Mg isotope fractionation factor between epsomite and aqueous MgSO4 solution has been measured using the three isotope method in recrystallization experiments conducted at 7, 20, and 40 °C. Complete ... all experiments. The Mg isotope exchange rate between epsomite and MgSO4 solution is dependent on the temperature, epsomite seed crystal grain size, and experimental agitation method. ... error, indicating that the Mg isotope composition of epsomite is relatively insensitive to temperature. The magnitude of ...
Tópico(s): Methane Hydrates and Related Phenomena
2011 - Elsevier BV | Geochimica et Cosmochimica Acta
Encarnación Ruíz-Agudo, Carlos Rodríguez‐Navarro,
... Borax promotes the crystallization of mirabilite and inhibits epsomite crystallization in open glass beakers. The additive is preferentially adsorbed onto {140} mirabilite and {111} epsomite faces, thus acting as an effective habit modifier. ... or co-precipitated) onto calcite, and mirabilite and epsomite crystals. Salt weathering tests using a biocalcarenite show ... Borax promotes the crystallization of both mirabilite and epsomite within the pores of the stone, reducing its ... to porous limestones affected by mirabilite and/or epsomite crystallization could be a new means of suppressing ...
Tópico(s): Recycling and utilization of industrial and municipal waste in materials production
2010 - Geological Society of London | Geological Society London Special Publications
Encarnación Ruíz-Agudo, J.D. Martı́n-Ramos, Carlos Rodríguez‐Navarro,
The thermal dehydration of epsomite (MgSO4·7H2O) crystals grown in the presence and absence of organic additives (phosphonates, carboxylic acids, and polyacrylic acid derivatives) was ... analyses (in air, 30% relative humidity) show an epsomite → hexahydrite (MgSO4·6H2O) transition at 25−38 °C, ... stage ESEM observations of the thermal dehydration of epsomite crystals are consistent with the nonisothermal kinetic study ... crystallization inhibitors tested. H-bonding between additives and epsomite crystal surfaces is consistent with Fourier transform infrared ...
Tópico(s): Crystallization and Solubility Studies
2006 - American Chemical Society | The Journal of Physical Chemistry B
Matteo Giordani, Maria Assunta Meli, Carla Roselli, Michele Betti, Fabio Peruzzi, Marco Taussi, Laura Valentini, Ivan Fagiolino, Michele Mattioli,
... scarce. In this study, the water-soluble natural epsomite fibres from Perticara Mine (Italy) were investigated using ... contents of radioactive isotopes (210Po and 228Th) in epsomite crystals, making the inhalation of these fibres potentially ... want to focus on soluble minerals, such as epsomite, which can be present in both natural and ...
Tópico(s): Therapeutic Uses of Natural Elements
2021 - Elsevier BV | Environmental Research
Abstract Short crystallisation and deliquescence cycles of mirabilite, epsomite and gypsum are identified by using an automated ... by small temperature and humidity variations. Mirabilite and epsomite undergo phase changes from crystallisation to deliquescence and ... length grow within one up to some days. Epsomite responds fainter and slower. Crystallisation of gypsum is ...
Tópico(s): Cultural Heritage Materials Analysis
2009 - Elsevier BV | Journal of Cultural Heritage
Epsomite (MgSO(4).7H(2)O) and hexahydrite (MgSO(4).6H(2)O) are common minerals found ... literature are in poor agreement. In this study, epsomite-hexahydrite equilibria were determined along four humidity-buffer ... 45 degrees C. Results obtained for the reaction epsomite = hexahydrite + H(2)O, as demonstrated by very ...
Tópico(s): Chemical and Physical Properties in Aqueous Solutions
2003 - Mary Ann Liebert, Inc. | Astrobiology
G. R. L. Kodikara, Lindsay J. McHenry, F.D. van der Meer,
A technique for estimating clinoptilolite, montmorillonite, and epsomite mineral abundances from a reflectance spectrum of mineral mixtures using spectral deconvolution and a deep neural network is proposed. Sixty-six ternary mineral ... of five montmorillonite and four of the five epsomite library spectra were identified with more than 90% ... and always predicted as mixtures of clinoptilolite and epsomite. This shows the difficulties of distinguishing non-analcime ...
Tópico(s): Isotope Analysis in Ecology
2022 - Elsevier BV | Planetary and Space Science
Jessie Harrison, Judith Lee, Bronwyn Ormsby, David J. Payne,
... humidity (RH) and light on the development of epsomite (MgSO 4 ·7H 2 O) in Winsor & Newton ... an additional possibility. It was previously theorised that epsomite formation in water-sensitive twentieth century oil paintings ...
Tópico(s): Conservation Techniques and Studies
2021 - Springer Science+Business Media | Heritage Science
Huan Wang, Long Li, Mengxue Wang, Xuanpeng Lei, Yafei Guo, Tianlong Deng,
... regions corresponding to inderite (Mg2B6O11·15H2O, Inde) and epsomite (MgSO4·7H2O, Eps). The crystallized area of inderite is larger than that of epsomite at three temperatures, indicating that the solubility of inderite is lower than that of epsomite. Comparison of the phase diagrams at (288.15, ...
Tópico(s): Calcium Carbonate Crystallization and Inhibition
2017 - American Chemical Society | Journal of Chemical & Engineering Data
... a suite of mixtures containing the Mg-sulfate epsomite mixed with varying proportions of smectitic clay (saponite, ... reflectance or single scattering albedo, (2) clay and epsomite abundance can be modeled to within 5 wt.% ... threshold for modeling clay in spectra of clay–epsomite mixtures is approximately 10 wt.%, below which the ...
Tópico(s): Isotope Analysis in Ecology
2014 - Elsevier BV | Icarus
Alian Wang, W. C. Feldman, M. T. Mellon, Mianping Zheng,
... temperature (T), sulfates with high degree of hydration (epsomite and ferricopiapite) have the enlarged stability fields toward ... ice sublimation. Using the activation energy (Ea) of epsomite dehydration, derived experimentally at Mars relevant atmospheric pressure ( ... we estimated the half-life (t1/2) of epsomite dehydration within a model predicted T range of ...
Tópico(s): Spaceflight effects on biology
2013 - Elsevier BV | Icarus
Huaichen Zhang, Eldhose Iype, S. V. Nedea, C.C.M. Rindt,
... heat storage in the built environment. Among all, epsomite (MgSO4·7H2O) excels for its high-energy storage ... changes in the thermal dehydration process of the epsomite. The MD simulation is carried out at 450 ...
Tópico(s): Solar-Powered Water Purification Methods
2013 - Taylor & Francis | Molecular Simulation
Klaus-Dieter Grevel, Juraj Majzlan,
... the stability of several Mg-sulfate hydrates including epsomite (MgSO4·7H2O), hexahydrite (MgSO4·6H2O), starkeyite (MgSO4·4H2O), ... enthalpies of formation from the elements are: ΔfH0298 (epsomite) = −3387.7 ± 1.3 kJmol−1 ΔfH0298 (hexahydrite) = − ... ΔfH0298 (kieserite) = −1612.4 ± 1.3 kJmol−1 Epsomite: ΔfH0298 = −3388.7 kJmol−1, S0298 = 371.3 ...
Tópico(s): CO2 Sequestration and Geologic Interactions
2009 - Elsevier BV | Geochimica et Cosmochimica Acta
Antonio Romero, Isabel González, Emilio Galán Huertos,
... et plus rarement, le rhomboclase, l'alpersite, l'epsomite, la hexahydrite et la starkeyite. Du point de ... pour accommoder l'arsenic. L'alpersite et l'epsomite peuvent accommoder jusqu'a 1-2% (poids) de ... regie par la geochimie de l'eau. L'epsomite, la hexahydrite et la starkeyite, qui definissent une ...
Tópico(s): Arsenic contamination and mitigation
2006 - Mineralogical Association of Canada | The Canadian Mineralogist
Jun Li, Roger St. C. Smart, Russell C. Schumann, Andrea R. Gerson, George Levay,
... to extract soluble Fe(II) salts (particularly melanterite), epsomite and gypsum (< 10 wt.%), (2) roasting at 550 ° ... extraction procedure was used to quantitatively determine melanterite, epsomite, gypsum, pyrite and jarosite concentrations in a synthetic ... using a tailings waste sample to quantitatively determine epsomite, gypsum and jarosite contents. The method is applicable ...
Tópico(s): Mining and Resource Management
2006 - Elsevier BV | The Science of The Total Environment
L. P. Keller, Gregory J. McCarthy, J. L. Richardson,
... sulfate salts of Na and Mg: mirabilite, thenardite, epsomite, hexahydrite, konyaite, and bloedite. Experiments consisting of isothermal ... precipitates at 28°C were mirabilite, konyaite, and epsomite. At 40°C, thenardite replaced mirabilite as a ... in the system also allows mirabilite, thenardite, and epsomite to form supersaturated solutions with respect to the ...
Tópico(s): Groundwater flow and contamination studies
1986 - Wiley | Soil Science Society of America Journal
Epsomite (MgSO 4 .7H 2 O) is a hydrogen bonded crystal having a wide range of applications in various fields.Pure and glycine added Epsomite (a total of six) single crystals have been ... glycine as an impurity on the properties of Epsomite crystals.The densities and lattice parameters observed indicate ... ε r value significantly indicating the possibility of Epsomite crystal becoming a low -ε r value dielectric ...
Tópico(s): Photorefractive and Nonlinear Optics
2013 - | IOSR Journal of Applied Physics
... infiltration of hydrophobic nanoporous silica gel immersed in epsomite solutions or mixed with epsomite crystals is investigated. Owing to the hysteresis of ... energy absorbing. In the liquid system, as the epsomite concentration increases, both the first-cycle infiltration pressure ...
Tópico(s): Mesoporous Materials and Catalysis
2006 - Taylor & Francis | Philosophical Magazine Letters
Saimoom Ferdous, Jiban Podder,
Highly transparent and well faceted large size epsomite single crystals have been grown in pure form and doped with KCl from aqueous solutions by slow cooling and isothermal evaporation method. The optical quality of the epsomite improves on doping by KCl. Mass growth rates ... with the higher concentration of KCl. KCl doped epsomite crystal reveals that structures are slightly distorted due ...
Tópico(s): Spectroscopy and Chemometric Analyses
1970 - | Journal of Bangladesh Academy of Sciences
Stephen A. Bowden, Rab Wilson, Colin Taylor, Jonathan M. Cooper, John Parnell,
Water-soluble sulphate minerals such as epsomite and gypsum have been reported on a number of planetary bodies of astrobiological interest and their presence is often used as an ... In this study, organic compounds were incorporated within epsomite as intracrystalline inclusions by co-precipitating a mineral ... process finely ground samples of the inclusion-bearing epsomite indicates that a similar device may be used ...
Tópico(s): Spacecraft and Cryogenic Technologies
2007 - Cambridge University Press | International Journal of Astrobiology
Kristofer Poirier, Najah Al Mhanna, Kumar Patchigolla,
... high purity, including calcite, anhydrite, sodium chloride, and epsomite, which can be sold to the cement industry. ... at near 100% purity, and 71.1% of epsomite at 40.7% purity. Resource recovery accounts for ...
Tópico(s): Water-Energy-Food Nexus Studies
2022 - Multidisciplinary Digital Publishing Institute | Separations
Robin M. Cesur, Irfan M. Ansari, Fei Chen, B. C. Clark, Mark Schneegurt,
... growth in saturated MgSO4 (∼67% w/v as epsomite) at room temperature, and growth was observed at ... in SP medium supplemented with 50% MgSO4 (as epsomite), 20% NaClO3, or 10% NaCl (w/v), and ...
Tópico(s): Biocrusts and Microbial Ecology
2021 - Mary Ann Liebert, Inc. | Astrobiology