Results 111 to 120 of about 76,410 (310)

The 10 micron spectral structure in comets [PDF]

The 10 micron spectra of comets Halley (1982i), Wilson (1986l), Kohoutek (1973f) and Bradfield (1987s) are presented and compared. The silicate emission profiles of Halley and Bradfield are seen to be remarkably similar in that both contain a sharp break
Campins, Humberto, Lynch, David K., Russell, Ray W.   +2 more
core   +1 more source

Petrogenetic Implications for Ophiolite Ultramafic Bodies from Lokris and Beotia (Central Greece) Based on Chemistry of Their Cr-spinels

Geosciences, 2017
Cr-spinels from ultramafic rocks from Lokris (Megaplatanos and Tragana), and Beotia (Ypato and Alyki) ophiolitic occurrences were studied. These rocks comprise principally harzburgite with minor dunite. Small amounts of clinopyroxene-rich harzburgite and
Panagiotis Pomonis, Andreas Magganas
doaj   +1 more source

Aliovalent Substitutions in Olivine Lithium Iron Phosphate and Impact on Structure and Properties [PDF]

, 2009
Nonglak Meethong, Yu‐Hua Kao, Scott A. Speakman, Yet‐Ming Chiang   +3 more
openalex   +1 more source

Lithium and carbon isotopic fractionations between the alteration assemblages of Nakhla and Lafayette [PDF]

, 2005
Nakhla and Lafayette delta 7Li values for samples and extracts (4.1-14.2�) are consistent with brine evaporation.
Baker, L., Bridges, J. C., James, R. H., Pearson, V. K., Verchovsky, A. B., Wright, I. P.   +5 more
core  

The mineralogy of newly formed dust in active galactic nuclei

, 2017
The tori around active galactic nuclei (AGN) are potential formation sites for large amounts of dust, and they may help resolve the so-called dust budget crisis at high redshift.
Foucaud, Sebastien, Gallagher, Sarah C., Hao, Lei, Ho, Luis C., Kemper, Franciska, Peng, Rita H. T., Scicluna, Peter, Shangguan, Jinyi, Srinivasan, Sundar, Xie, Yanxia, Zhou, Yeyan   +10 more
core   +1 more source

Petrochemistry of Ultramafic Rock in Baula - Pomalaa Ophiolite Complex, Southeast Sulawesi, Indonesia

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Baula and Pomalaa Ophiolitic Complexes are part of East Sulawesi Ophiolite (ESO). The ultramafic rocks in the Baula and Pomalaa Ophiolite Complex mainly is peridotite and consist of harzburgite, lherzolite and olivine websterite, mostly serpentinized ...
Rio Irhan Mais Cendrajaya, Laode Ihksan Juarsan, Masri, Al Rubaiyn, Syahrul, Neni, Suci Ramadani, Hasria   +7 more
doaj   +1 more source

Repository: Global distribution and geological context of co-existing occurrences of olivine-rich and plagioclase-rich materials on the lunar surface

, 2021
S. Yamamoto, M. Ohtake, Yuzuru Karouji, M. Kayama, Hiroshi Nagaoka, Yoshiaki Ishihara, Jun-ich Haruyama   +6 more
openalex   +2 more sources

Hawaiian beaches as natural analogues for enhanced silicate weathering of olivine

Environmental Research Letters
Silicate weathering induces atmospheric CO _2 sequestration through alkalinity release, which is Earth’s prime mechanism for regulating the climate. Marine enhanced rock weathering (mERW) seeks to accelerate this process by distributing fast-weathering ...
Matthias Kreuzburg, Astrid Hylén, Devon B Cole, Stephen J Romaniello, Chandra W Winardhi, Veerle Cnudde, Daniel A Frick, Josephine Barnett, Kirsten P Nicolaysen, Filip J R Meysman   +9 more
doaj   +1 more source

Magnetic structures and excitations in sawtooth olivine chalcogenides Mn₂SiX₄ (X = S, Se)

, 2023
H. Cein Mandujano, Melaku Sisay Tafere, Naveen Kumar Chogondahalli Muniraju, Tielyr D. Creason, Timothy M. McWhorter, Krzysztof Gofryk, Thomas Heitmann, Qiang Zhang, Bayrammurad Saparov, Harikrishnan S. Nair   +9 more
openalex   +2 more sources

Olivine family spectroscopy analysed using the Asymmetric Gaussian Method [PDF]

, 2021
A. J. Brown
openalex   +1 more source