Results 51 to 60 of about 37,548 (250)
, 2013 In the past, constraining the surface composition of near-Earth asteroids (NEAs) has been difficult due to the lack of high quality near-IR spectral data (0.7-2.5 microns) that contain mineralogically diagnostic absorption bands. Here we present visible (
Michelsen, René +3 more
core +1 more source
Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen
Physik in unserer Zeit, EarlyView.Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley +1 more source
Estudio y caracterización de vidriados vitrocerámicos basados en piroxeno
Boletín de la Sociedad Española de Cerámica y Vidrio, 2004 A method was proposed to develop pyroxene-based glass-ceramic glazes. First, was studied, by X-ray diffraction and scanning electron microscopy, the effect of several additives in the monophasic crystallization of pyroxene from glasses in the CaO•MgO ...
Lucas, F. +3 more
doaj
Petrography and bulk composition of Miller Range 05035: a new lunar VLT gabbro [PDF]
, 2007 Miller Range (MIL) 05035 is a crystalline lunar mare gabbroic meteorite collected in Antarctica in 2005 [1]. It is an important new sample in the lunar meteorite (LM) collection as it is only one of ~8 to be classified as basaltic in nature. MIL 05035 is
Anand, M. +3 more
core
Archaeometry, EarlyView.Abstract This paper presents the first direct evidence of the slags produced during the cementation alloying process of Cu with speiss inside ceramic crucibles, thus representing Cu alloying with As in Middle Kingdom Egypt. The settlement deposits from the Middle Bronze Age were excavated on Elephantine Island, within modern Aswan.
Jiří Kmošek, Martin Odler
wiley +1 more source
Near‐infrared Spectra of Lunar Ferrous Mineral Mixtures
Earth and Space Science, 2021 Iron‐bearing minerals are a major component of materials on the lunar surface, and many of them can be distinguished based on the diagnostic absorption features in visible and near‐infrared reflectance spectra.
Xunyu Zhang, Edward Cloutis
doaj +1 more source
Reflectance spectra of Mesosiderites: Implications for asteroid 4 Vesta [PDF]
, 2007 Oxygen isotopic data argues that HEDs and mesosiderites may be from the same parent body. A spectral survey of mesosiderites was done to determine their spectral properties in the visible and near-infrared and compare to ...
Buchanan, P.C. +4 more
core
Archaeometry, EarlyView.ABSTRACT This paper examines transport amphorae of Greek/Aegean types from the 7th–4th c. BCE imported to the Phoenician coastal settlement of Tell el‐Burak, Lebanon. We present a selection of 58 pieces analyzed by typological, chemical (NAA), and petrographic approaches.
Maximilian Rönnberg +3 more
wiley +1 more source
Geological Magazine, 1961 Discussion of articles by Muir and Tilley, M. J. O9Hara, and A. F. Wilson, pointing out that the distribution coefficient can be taken as a direct measure of the distribution of Mg and Fe between orthopyroxene and clinopyroxene, and suggesting that projection of tie-lines is meaningless and should be abandoned.
openaire +2 more sources
JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019 Lamongan volcano is one of the unique volcanoes in the Sunda Volcano. This volcano has side eruption centers or on the slopes of the volcano. The morphology of parasitic eruptions in this volcanoes complex includes maars and boccas.
Dwi Fitri Yudiantoro +2 more
doaj +1 more source