Results 171 to 180 of about 674 (209)
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Mineralogy and Deformation in Some Lunar Samples
Science, 1970Observations on the mineralogy and deformation in samples of crystalline rocks, breccias, and fines from Tranquillity Base provide evidence for magmatic and impact processes. Overall homogeneity, igneous textures, and absence of xenoliths in the crystalline rocks indicate derivation from a common titanium-rich magma by internal, anorogenic volcanism ...
J A, Douglas +3 more
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Mineralogy and Composition of Lunar Fines and Selected Rocks
Science, 1970Mineralogical descriptions and both wet chemical analyses and microprobe analyses are given of the glasses and crystalline components of the lunar fines and of the minerals in microgabbros (samples 10050 and 10047). The principal minerals described are various clinopyroxenes, plagioclase, olivine, low cristobalite, low tridymite, ilmenite, iron-nickel,
C, Frondel, C, Klein, J, Ito, J C, Drake
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Lunar Soil: Size Distribution and Mineralogical Constituents
Science, 1970The lunar soil collected by Apollo 11 consists primarily of submillimeter material and is finer in grain size than soil previously recorded photographically by Surveyor experiments. The main constituents are fine-grained to glassy rocks of basaltic affinity and coherent breccia of undetermined origin. Dark glass, containing abundant nickel-iron spheres,
M B, Duke +4 more
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The lunar regolith: Chemistry, mineralogy, and petrology
Reviews of Geophysics, 1982The lunar regolith, a several meter thick layer of unconsolidated debris, forms the interface between the moon and its space environment. The regolith forms from lithic sources by the destructional processes of comminution and the constructional processes of agglutinate formation. In this manner a steady state soil can develop and will remain in a type
J. J. Papike, S. B. Simon, J. C. Laul
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Mössbauer mineralogy on the Moon: The lunar regolith
Hyperfine Interactions, 1998A first-order requirement for spacecraft missions that land on solid planetary objects is instrumentation for mineralogical analyses. For purposes of providing diagnostic information about naturally-occurring materials, the element iron is particularly important because it is abundant and multivalent.
Richard V. Morris +3 more
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Mineralogic and Petrologic Study of Lunar Anorthosite Slide 15415,18
Science, 1972The anorthosite slide 15415,18 contains > 98 percent subhedral plagioclase (97 mole percent anorthite), two pyroxenes: diopsidic augite (46 percent wollastonite, 39 percent enstatite, 16 percent ferrosilite) with subsidiary (100) lamellae and grains of hypersthene (2.5 percent wollastonite, 58 percent enstatite, 39.5 percent ferrosilite), and traces
R B, Hargraves, L S, Hollister
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Mineralogical studies of lunar rock 12013, 10
Earth and Planetary Science Letters, 1970Abstract A preliminary report is given on the mineralogy of three fragments of lunar rock 12013, 10. In both light and dark areas crystals of plagioclase, alkali feldspar, ilmenite, quartz and other minerals are encrusted with a sugary coating of quartz. This coating also contains dispersed opaque fine particles and small crystallites of SiC, brasses
P. Gay, M.G. Bown, K.O. Rickson
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MINERALOGY, PETROLOGY AND CHEMISTRY OF LUNAR ROCK 12039
Meteoritics, 1972Rock 12039 belongs to the olivine‐depleted group of magmatic rocks characterized by normative and modal SiO2, absence or very low abundance of olivine, and high FeO/(FeO + MgO), Ti/Cr, and CaO/MgO ratios. Clinopyroxenes in this rock show a complex, essentially continuous, compositional zonation from augite cores through ferroaugite to ferrohedenbergite
T. E. Bunch, Klaus Keils, Martin Prinz
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The Texture and Mineralogy of Lunar Peridotite, 15445,10
The Journal of Geology, 1973Rock fragment 15445,10 consists of dominant olivine (91 mole % Mg₂SiO₄, 0.03 wt % NiO) and aluminous enstatite (91 mole % MgSiO₃, 5 wt % Al₂O₃), together with substantial chrome spinel (14 wt % Cr₂O₃), minor amounts of granular, interstitial plagioclase (94 mole % CaAl₂Si₂O₈), and traces of rutile (?) (1.0 wt % Nb₂O₅) and armalcolite.
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Mineralogical mapping of selected areas of the lunar surface using Moon Mineralogy Mapper data.
2023The dissertation is concerned with spectrophotometric studies of selected areas of the lunar surface using the data generated by the mapping spectrometer Moon Mineralogy Mapper (M3), onboard the Chandrayaan-1 spacecraft. Spectrophotometry is one tool to investigate planetary surfaces by remote sensing.
Surkov, Yehor +5 more
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