Results 181 to 190 of about 674 (209)
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Lunar materials: Their mineralogy, petrology and chemistry
Earth-Science Reviews, 1972Abstract The manned Apollo 11, 12, 14 and 15 and the automated Luna 16 lunar missions have provided us with lunar rock and regolith (soil) samples from a number of geologically distinct sites. The mare regions were sampled by Apollo 11, 12 and Luna 16, whereas Apollo 14 landed on a terrain with more relief, the Fra Mauro Formation which represents an
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Mineralogic and isotopic investigations on lunar rock 12013
Earth and Planetary Science Letters, 1970Apollo 12 lunar rock 12013 petrologic and mineralogic characteristics, discussing data on isotopic Xe and Gd ...
Albee, A. L. +8 more
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Lunar Anorthosite 15415: Texture, Mineralogy, and Metamorphic History
Science, 1972Lunar anorthosite 15415 consists almost entirely of anorthite (homogeneous anorthite 96.6 molecule percent), with accessory diopsidic augite and traces of hypersthene, ilmenite, and a silica mineral. The rock has had a complex metamorphic history. The texture reflects at least two episodes of shearing (followed by intense and partial recrystallization,
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The Mineralogy, petrology and geochemistry of lunar samples - a review
The Moon, 1972Crystallization from the molten state has been an important process for the formation of rocks on the Moon; the phenomenon of fractional crystallization is therefore discussed. The principal chemical and mineralogical features of the Apollo 11, 12 and 14 basaltic crystalline rocks are described, and an account is given of other rock types and minerals ...
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Journal of Geophysical Research, 2011
[1] The last major phases of lunar volcanism produced spectrally unique high-titanium basalts on the western nearside of the Moon. The Moon Mineralogy Mapper (M3) on Chandrayaan-1 has provided detailed measurements of these basalts at spatial and spectral resolutions necessary for mineralogical interpretation and mapping of distinct compositional units.
M. I. Staid +13 more
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[1] The last major phases of lunar volcanism produced spectrally unique high-titanium basalts on the western nearside of the Moon. The Moon Mineralogy Mapper (M3) on Chandrayaan-1 has provided detailed measurements of these basalts at spatial and spectral resolutions necessary for mineralogical interpretation and mapping of distinct compositional units.
M. I. Staid +13 more
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A seismic model of the lunar mantle and constraints on temperature and mineralogy
Physics of the Earth and Planetary Interiors, 2006Abstract We determine seismic profiles of the Moon’s interior using travel times obtained from a re-analysis of the Apollo data. Due to the limited number of quakes and stations, travel times errors were determined and used in the inversions. Our model has a mean crustal thickness of about 30 km in the region of the Apollo network, with a 10 km zone ...
Gagnepain-Beyneix, Jeannine +4 more
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A statistical-chemical and thermodynamic approach to the study of lunar mineralogy
Geochimica et Cosmochimica Acta, 1974Principal components analysis is used to study the chemical compositions of pyroxenes of five Apollo 12 specimens. Important correlations are recognized in the variation of oxide weight per cent. These correlations indicating substitutional relationships can be interpreted as representative of stable and metastable trends of crystallization by using ...
S.K. Saxena, L.S. Walter
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Introduction: Lunar soil simulants have been produced since 1971, as the upcoming space missions needed astronauts to be trained in conducting scientific field works on the Moon’s surface. [1] However, the first lunar soil simulants were not satisfactory in terms of chemical composition and mineralogy, as they were focused on having the proper ...
Valeria De Santis +3 more
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Valeria De Santis +3 more
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