Article
Geochemistry & Geophysics
Michael W. R. Volk, Roger R. Fu, Anna Mittelholz, James M. D. Day
Summary: The strength and duration of the martian dynamo are crucial for understanding Mars' habitability and deep interior dynamics. Recent data from the InSight mission show stronger than predicted crustal fields, which can be explained by an older subsurface magnetized layer without a late, active dynamo, supporting a deeply buried, highly magnetized crust in the northern hemisphere of Mars. These findings provide corroborating evidence for the existence of strong, small-scale crustal fields on Mars.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2021)
Article
Spectroscopy
Itziar Prieto-delaVega, Cristina Garcia-Florentino, Imanol Torre-Fdez, Jennifer Huidobro, Julene Aramendia, Gorka Arana, Kepa Castro, Juan Manuel Madariaga
Summary: This study characterized the mineral phases of NWA 10628 using micro-Raman spectroscopy and micro-energy dispersive X-ray fluorescence imaging. Various minerals and their potential evolutionary processes were identified in the meteorite.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Chemistry, Analytical
C. Garcia-Florentino, I Torre-Fdez, P. Ruiz-Galende, J. Aramendia, K. Castro, G. Arana, M. Maguregui, S. Fdz Ortiz de Vallejuelo, J. M. Madariaga
Summary: This study introduces an innovative non-destructive analytical strategy using Confocal Raman microspectroscopy, High Resolution Raman Imaging, and micro-X-Ray Fluorescence imaging to characterize Martian samples, such as the Dar al Gani 735 Martian Meteorite, and identify terrestrial and non-terrestrial alterations. The combination of these techniques allows extracting elemental, molecular, and structural information from the samples, showing the potential of Raman spectroscopy as a key technique in upcoming Mars exploration missions with Raman spectrometers.
Article
Spectroscopy
Leire Coloma, Cristina Garcia-Florentino, Jennifer Huidobro, Imanol Torre-Fdez, Julene Aramendia, Gorka Arana, Kepa Castro, Juan Manuel Madariaga
Summary: This study presents a non-destructive analytical methodology for characterizing Martian samples and tested it on a fragment of the Northwest Africa 1950 Martian meteorite. The methodology provides mineralogical characterization of the samples and allows assessment of chemical transformations, contributing important clues to understanding mineral processes and geological evolution on Mars.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Astronomy & Astrophysics
Andrew Rodriguez, Lindsey Hunt, Charity Phillips-Lander, Daniel Mason, Megan Elwood Madden
Summary: Salts and basalt on the surface of Mars can interact and affect the aqueous history and near-surface alteration assemblages. Raman spectroscopy has been used to identify secondary minerals formed during basalt-brine interactions, demonstrating its utility in studying such processes on Mars. The presence of carbonate minerals indicates the rapid reaction of CO2 from the atmosphere with ions released from basalt during alteration in near-saturated brines.
Article
Engineering, Aerospace
M. Aznar, A. Sanz-Arranz, S. Shkolyar, E. R. Sawyers, M. Konstantinidis, G. Lopez-Reyes, M. Veneranda, E. A. Lymer, J. R. Freemantle, M. G. Daly, E. A. Cloutisi, F. Rull-Perez, J. Martinez-Frias, E. A. Lalla
Summary: Several space missions have visited and will land on Mars to search for life. The Mars 2020 Perseverance rover and the upcoming ExoMars Rosalind Franklin rover are equipped with Raman spectroscopic systems to identify rocks, minerals, and potential organic biosignatures on the Martian surface. The analysis of data from these missions faces challenges, and studying new volcanic analogues on Earth, such as the Cha similar to das Caldeiras site, can help overcome these challenges. The site exhibits similarities to volcanic places in the Canary Islands and provides pristine samples of volcanic minerals.
ADVANCES IN SPACE RESEARCH
(2023)
Article
Spectroscopy
Haijun Cao, Jian Chen, Xiaohui Fu, Yanqing Xin, Xiaobin Qi, Erbin Shi, Zongcheng Ling
Summary: Petrological and mineralogical analyses of NWA 10720 indicate that this Martian nakhlite has experienced complex magmatic activity before eruption, with two-stage magmatism being evident. The presence of secondary mineral assemblages such as iddingsite-like veins and various Fe-oxide species suggests late-stage alteration dominated by oxidization and dehydration.
JOURNAL OF RAMAN SPECTROSCOPY
(2022)
Article
Chemistry, Multidisciplinary
Abhisek Basu, Mainak Mookherjee, Christina Schiffert, Bianca Haberl, Reinhard Boehler
Summary: The study used a diamond anvil cell and Raman spectroscopy to explore the molecular structure changes of octadecane under high pressure, finding that at higher pressures octadecane molecules transition from linear to a bent chain configuration. There is a linear correlation between the chain length of alkanes and the transition pressure from linear to bent configuration, suggesting longer chain alkanes are more likely to transition to a bent configuration under compression.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jennifer Huidobro, Julene Aramendia, Gorka Arana, Juan Manuel Madariaga
Summary: The lunar feldspathic breccia meteorite NWA 11273 was analyzed using nondestructive spectroscopic techniques such as X-ray fluorescence and Raman spectroscopy, revealing not only minerals related to Moon geology, but also minerals associated with terrestrial weathering and secondary alteration processes.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Chemistry, Physical
R. Bhavani, N. Kanagathara, M. K. Marchewka, J. Janczak
Summary: The current research investigates the structural and spectroscopic characterization of the products formed in the aqueous solution of hydrazine and maleic acid. Both experimental and theoretical methods are used to analyze the structure and vibrational spectra. The study also explores the molecule's charge transfer and nonlinear attributes.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Geochemistry & Geophysics
Victoria L. Frankland, Antoni E. Milodowski, Joshua W. G. Bright, David Read
Summary: The study successfully distinguished two potential alteration products of spent nuclear fuel using Raman spectroscopy and time-resolved laser fluorescence spectroscopy, confirming their chemical composition and characteristics. These techniques have potential value for characterizing uranyl oxy-hydroxides and could be used in conjunction with other methods for nuclear waste management.
APPLIED GEOCHEMISTRY
(2021)
Article
Chemistry, Analytical
Ana M. Jimenez-Carvelo, Alejandra Arroyo-Cerezo, Sanae Bikrani, Wenyang Jia, Anastasios Koidis, Luis Cuadros-Rodriguez
Summary: Spatially offset Raman spectroscopy (SORS) is a novel technique that allows measurement of samples through packaging and recovery of spectra without surface layer interference. This study used a portable SORS equipment to measure margarines and fat spreads, and chemometric tools were used for data analysis. The results showed that SORS data outperformed conventional Raman spectroscopy (CRS) in classification models and quantitative analysis, demonstrating the potential of SORS as a fast, non-destructive, and non-invasive analytical technique in food analysis.
MICROCHEMICAL JOURNAL
(2022)
Article
Materials Science, Ceramics
V. V. Ulyashev, T. G. Shumilova, S. I. Isaenko
Summary: Ultrahigh-pressure high-temperature glasses have unusual structural and phase aspects, which need to be investigated in order to understand their physical properties and the possibility of using innovative materials. Experimental modeling of an impact process sheds light on the nature of phase transformations during impactogenesis. The obtained impact glasses contain a high proportion of Ca and carbon, indicating the possibility of obtaining glass with wide compositions for further research and development of new materials and technologies.
GLASS AND CERAMICS
(2023)
Article
Mineralogy
Simone Margheri, Luca Bindi, Paola Bonazzi, Dan Holtstam
Summary: Parahibbingite, a new mineral discovered in South Africa, forms as a weathering product of the Muonionalusta iron meteorite. Its crystal structure has been confirmed through X-ray diffraction data, showing its importance in the corrosion system of archaeological iron artifacts and as an alteration product of iron meteorites.
MINERALOGICAL MAGAZINE
(2022)
Article
Spectroscopy
Cheng Xiao-xiang, Wu Na, Liu Wei, Wang Ke-qing, Li Chen-yuan, Chen Kun-long, Li Yan-xiang
Summary: Iron artefacts are prone to corrosion and deterioration due to their high activity. Determining the composition of iron corrosion products is significant for evaluating the stability of these cultural relics. This study used pure chemical reagents to simulate common corrosion products on iron artefacts and employed Raman spectroscopic imaging along with various statistical methods to establish quantitative models. The research results provide an effective method for quantitatively evaluating the chemical stability of corrosion products of iron artefacts.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2023)
