Olivine-dominated asteroids: Mineralogy and origin
نویسندگان
چکیده
منابع مشابه
Mineralogy of Asteroids
The past decade has seen a significant expansion both in the interpretive methodologies used to extract mineralogical information from asteroid spectra and other remote-sensing data and in the number of asteroids for which mineralogical characterizations exist. Robust mineralogical characterizations now exist for more than 40 asteroids, an order a magnitude increase since Asteroids II was publi...
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We report here detailed analytical scanning and transmission electron microscopic investigations on an olivine-dominated dust particle (RB-QD04-0042) from the surface of asteroid 25143 Itokawa. The dust particle was returned to Earth by the Hayabusa spacecraft and was made available in the context of the first announcement of opportunity for Hayabusa sample investigation. Multiple thin slices w...
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The regions around the L4 and L5 Lagrangian points of Jupiter are populated by two large swarms of asteroids called the Trojans. They may be as numerous as the main-belt asteroids and their dynamics is peculiar, involving a 1:1 resonance with Jupiter. Their origin probably dates back to the formation of Jupiter: the Trojan precursors were planetesimals orbiting close to the growing planet. Diff...
متن کاملOlivine-Pyroxene Distribution of S-type Asteroids Throughout the Main Belt
The mineralogical composition of asteroids can be constrained using visible and near-IR (VNIR) spectroscopy. The most prominent spectral features observed over this wavelength range are due to olivine and pyroxene, the two most abundant minerals in both chondritic and achondritic meteorites. The observed ratio of these two minerals is highly dependent on the amount of heating that an asteroid h...
متن کاملRemote compositional analysis of lunar olivine‐rich lithologies with Moon Mineralogy Mapper (M) spectra
[1] A systematic approach for deconvolving remotely sensed lunar olivine‐rich visible to near‐infrared (VNIR) reflectance spectra with the Modified Gaussian Model (MGM) is evaluated with Chandrayaan‐1 Moon Mineralogy Mapper (M) spectra. Whereas earlier studies of laboratory reflectance spectra focused only on complications due to chromite inclusions in lunar olivines, we develop a systematic ap...
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ژورنال
عنوان ژورنال: Icarus
سال: 2014
ISSN: 0019-1035
DOI: 10.1016/j.icarus.2013.10.006