منابع مشابه
Mineralogy, Geochemistry and Raman Spectroscopy of Multi-Genesis Serpentine Polymorphs of Darepahn Ophiolites
The present article pays to some Alpine-Himalayan ophiolites of Late Cretaceous age from Darepahn area in the southern part of Nain-Baft Ophiolite belt. Whole rock processed data clearly shows that the metaperidotite rocks are silica-poor with low CaO, Al2O3, and TiO2 that reflect the predominance of olivine over calcic pyroxene in the protolithes. The considerable content of Co (85.6–124.6 ppm...
متن کاملAsteroid Surface Mineralogy Using Hapke Mixing Models: the Spectral Effects of Coarse-grained Metal
Introduction: The spectral properties of asteroid surfaces are governed by the mineralogy, the physical state, the amount of impact-produced glass, and the degree of space weathering of the asteroid regolith. Hapke's theories [1,2] and the work of [3] were used to create a model that calculates the spectrum of an airless planetary surface for a given modal mineralogy and mineral chemistry, with...
متن کاملTime-resolved Raman spectroscopy for in situ planetary mineralogy.
Planetary mineralogy can be revealed through a variety of remote sensing and in situ investigations that precede any plans for eventual sample return. We briefly review those techniques and focus on the capabilities for on-surface in situ examination of Mars, Venus, the Moon, asteroids, and other bodies. Over the past decade, Raman spectroscopy has continued to develop as a prime candidate for ...
متن کاملCharacterizing clay mineralogy in Lake Towuti, Indonesia, with reflectance spectroscopy
We tested the use of visible to near-infrared (VNIR) reflectance spectroscopy to characterize the relative abundances of clay minerals in sediments from Lake Towuti, a large tectonic lake in Sulawesi, Indonesia. We measured VNIR spectra of lake and river sediments from Lake Towuti and its catchment to identify clay minerals, fit major VNIR absorption features with a modified Gaussian model to e...
متن کاملRotation-Resolved Spectroscopy of a Very Young Asteroid, (1270) Datura
(1270) Datura is the largest member of a very young asteroid cluster that was thought to be broken-up 0.45 Myr ago. The light-curve and the rotationresolved reflectance spectra (0.6 μm – 1.0 μm) were observed in order to find “fresh” surface. Our data show no significant spectral variation along the rotation phase. The depth of the 0.95 μm absorption band, which indicates the degree of space we...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1994
ISSN: 0074-1809
DOI: 10.1017/s0074180900046581