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Tuesday, April 21, 2020 | History

1 edition of Electron microprobe analyses of minerals from Apollo 12 lunar samples found in the catalog.

Electron microprobe analyses of minerals from Apollo 12 lunar samples

Electron microprobe analyses of minerals from Apollo 12 lunar samples

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  • 2 Currently reading

Published by Dept. of Geology & Institute of Meteoritics, University of New Mexico in Albuquerque .
Written in English

    Subjects:
  • Lunar mineralogy.,
  • Lunar geology.

  • Edition Notes

    Bibliography: p. 1.

    Statement[by] F. D. Busche [and others]
    SeriesUNM Institute of Meteoritics. Special publication no. 3, Special publication (University of New Mexico. Institute of Meteoritics) ;, no. 3.
    ContributionsBusche, F. D.
    Classifications
    LC ClassificationsQB592 .E42
    The Physical Object
    Pagination61 p.
    Number of Pages61
    ID Numbers
    Open LibraryOL5029422M
    LC Control Number73637259

    Apollo 15 yellow-brown volcanic glass: Chemistry and petrogenetic relations to green volcanic glass and olivine-normative mare basalts. Apollo 15 Rake Sample Microbreccias and Non-Mare Rocks: Bulk Rock, Mineral and Glass Electron Microprobe Analyses. Department of Geology and Institute of Meteoritics, The University of New Mexico, Special Publication Num Hlava, Paul F. The planetary materials research group is focused on understanding the chemical and physical origins of our solar system and ancient stars. Clues to such origins are stored in the atoms contained within meteorites and related planetary materials (e.g., interplanetary dust particles, as well as cometary, asteroidal, and lunar samples returned from space missions) which are the condensed matter. Electron Microprobe Analysis of the Lunar Meteorite Sample NWA Jan – Feb The basaltic lunar meteorite Northwest Africa (NWA ) Title: Graduate Lab Assistant at .


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Electron microprobe analyses of minerals from Apollo 12 lunar samples Download PDF EPUB FB2

Get this from a library. Electron microprobe analyses of minerals from Apollo 12 lunar samples. [F D Busche;]. Terrestrial analogs of lunar ilmenite have been analyzed using electron microprobe analysis and were selected according to hematite and geikielite content.

Sample surfaces were prepared by argon. Electron microprobe analyses of eight optically isotropic chrome spinels (gray and blue) and seven optically anisotropic chrome ulvöspinels (tan, pink, khaki) have been carried out on four unshocked microgabbros from the Apollo 12 Electron microprobe analyses of minerals from Apollo 12 lunar samples book samples.

These analyses fall into two compositionally distinct groups along the join Fe 2 TiO 4 (ulvöspinel Cited by: Where the mineral chemistry has shown that the sample is representative of the parent melt, for example, as a result of the effective recalculation of the Mg# of the melt, then the bulk chemistry has been used to provide an initial comparison to other Apollo 12 samples using a simple paired samples t‐test to compare bulk oxide values (Table 4.

Electron microprobe analyses of eight optically isotropic chrome spinels (gray and blue) and seven optically anisotropic chrome ulvöspinels (tan, pink, khaki) have been carried out on four unshocked microgabbros from the Apollo 12 lunar samples.

These analyses fall into two compositionally distinct groups along the join Fe 2 TiO 4 (ulvöspinel)-FeCr 2 O 4 (chromite) in the system (Fe,Mg)O-TiO 2 Cited by: Lunar Sample Overview. When viewed through a telescope, the Apollo 12 landing site has fewer craters and a slightly redder color than the Apollo 11 landing site.

It was thought that these characteristics indicated that the rocks at the Apollo 12 landing site were both younger and different in chemical composition than the rocks at the Apollo 11 landing site.

AssrnAcr Spinels in four Apollo 12 igneous rocks have been analyzed with the electron microprobe. Spinel composition is complex and reflects solid solution between five end members that can best be represented in a modified spinel prism in which Tia replaces Fea.

Introduction The results and discussion presented in this paper are based upon optical (reflected light) and electron probe studies of thin section No. 9 from Apollo 12 samples supplied to us by NASA The specimen is a medium grained porphyntic rock containing large (up to 5 mm) laths of pyroxene and crystals of olivine set to a relatively fine grained (less than pin) groundmass of plumose pyroxene- plagioclase by: This book focuses on the specific mission planning for lunar sample collection, the equipment used, and the analysis and findings concerning the samples at the Lunar Receiving Laboratory in Texas.

Anthony Young documents the collection of Apollo samples for the first time for readers of all backgrounds, and includes interviews with many of. Electron Microprobe - JEOL JXA Superprobe The electron-probe microanalyser (EPMA) is a state-of-the art instrument for the spot analysis and element mapping of minerals and materials.

It consists of an X-ray EDS (Energy Dispersive Spectrometer) detector, 4 wavelength dispersive detectors (2 low count rate detectors for trace elements), a. Armalcolite - A new mineral from the Apollo 11 samples Lithic fragments and glasses in Apollo 12 lunar samples Read more. Article. Electron microprobe analyses of lithic fragments and.

bulk chemical composition, major, minor and trace element analyses of mineral phases are employed to ascertain how these samples relate to the Apollo 12 lithological basalt groups, thereby overcoming the problems of representativeness of small samples. All of the samples.

Introduction: A large number of glasses and minerals in soil have been analyzed with the electron microprobe. Chemical compositions are given in tables in the appendix.

A number of plots accentuate certain features and some comparisons are made with glasses from Apollo 11 and 12 samples. Many of the glasses are enriched in feldspar and Kreep components. A considerable number of,analyses of lunar tridymite and cristo-balite have been published (far more, incidentally, than of terrestrial occurrences of these minerals).

The most extensive series has been provided by Busche et al. (I), who published 29 analyses of silica minerals (polymorph not specified) in Apollo 12 samples. Their results. Apollo 12 soils, a careful study of basaltic fragments within them will nevertheless provide new insights to the duration of lunar volcanism and the magmatic evolution of this region of the Moon.

This is the focus of this study. A total of kg of samples were returned by the Apollo 12 mission (Lunar Sample.

Electron Microprobe Analyses of Lithic Fragments and Glasses from Apollo 12 Lunar Samples. Albuquerque, NM: Dept. of Geology & Institute of Meteoritics, University of New Mexico, Institute of Meteoritics Special publication no.

Title: Electron microprobe analysis of minerals from Apollo 12 lunar samples. Busche, F. D., Conrad, G. H., Keil, K., Prinz, M., Bunch, T. E., Erlichman, J., and Quaide, W. () Electron microprobe analysis of minerals from Apollo 12 lunar samples. UNM Institute of.

The zirconium dioxide, baddeleyite, is commonly associated with the opaque minerals, mainly ilmenite. Electron microprobe analyses indicate the presence of minor Zr in both ilmenite and ulvöspinel ( up to wt % ZrO 2 in ilmenite versus to in ulvöspinel). i.e.

Zr is preferentially concentrated in the ilmenite by: Moon Rocks and Minerals: Scientific Results of the Study of the Apollo 11 Lunar Samples with Preliminary Data on Apollo 12 Samples - Kindle edition by Levinson, Alfred A., Taylor, S.

Ross. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Moon Rocks and Minerals: Scientific Results of the Study Price: $ Each sample was re-evalu- ated petrographically, and new major-element mineral-chemi- cal data were obtained by electron microprobe analysis to con- firm published data, to assess the extent of compositional zon- ing, and to document the composition of each ion probe analy- sis.

Moon Rocks and Minerals: Scientific Results of the Study of the Apollo 11 Lunar Samples with Preliminary Data on Apollo 12 Samples Paperback – Febru by Alfred A.

Levinson (Author) See all 3 formats and editions Hide other formats and editions. Price New from Used from Kindle Cited by: 2. Abstract We present the first quantitative compositional analysis of thorite in a lunar sample. The sample, a granitic assemblage, also contains monazite and yttrobetafite grains, all with concentrations of U, Th, and Pb sufficiently high to determine reliably with the electron microprobe.

Lunar meteorites, being the random samples ejected from the lunar surface by impact, provide additional information on lunar differentiation and evolution. Among all basaltic meteorites so far identified, Northwest Africa (NWA) contains 12 wt% Al 2O 3 and displays an affinity to the Apollo 14 high-Al basalts (Greshake et al.

Approximately glasses and 52 lithic fragments from Apollo 11 lunar fines and microbreccias were analyzed with the electron microprobe. Ranges in bulk composition of lithic fragments are considerably outside the precision (electron beam by: mineral standards included O analysis by FNAA, com-positional analysis by electron microprobe and X-ray flu-orescence spectroscopy (XRD, analysis of Fe3+/2Fe by Mdssbauer spectroscopy, and analysis of H by U extrac-tion process for hydrous samples.

Sllrpr.t sELEcrroN Several criteria were used to select mineral standards for this Size: KB. Apollo 11 site. Uranium distributions within Apollo 12 rocks have been measured by fission track analysis.

Neutron activation analyses to Re and 0s place limits to meteoritic contamination of rocks and dust from the Apollo 12 site. 0 Lunar and Planetary Institute Provided by. Bouchet, M.; Kaplan, G.; Voudon, A. and Bertoletti, M.J. () Spark mass spectrometric analysis of major and minor elements in six lunar Size: 61KB.

Water has been found in many lunar rock samples, but its sources are unknown. Isotopic analyses of Apollo samples of lunar mare basalts and highlands rocks suggest that a significant volume of Cited by: of these samples we use major, minor and trace ele-ment mineral chemistry to compare these samples with other basalts at the Apollo 12 site.

Methods: Samples were analysed with a JEOL JXA electron microprobe with an Oxford Instru-ment INCA energy dispersive system (EDS) to produce back scattered electron (BSE) images. Bulk chemical. Geochemical analyses of these types of lunar samples returned by the Apollo missions have greatly increased our understanding of the Moon's geological history (e.g.

[] and references therein).In particular, much information about the early igneous evolution of the Moon has been obtained from abundances and isotopes of trace element abundances, especially for the incompatible rare Cited by: • Luna sample return: L 20 and 24 collected kg of lunar soil • Apollo sample return: Six Apollo missions ~ kg of rocks and soil • Apollo 22kg (basalts and breccias) • Apollo 34 kg (almost all basalts) • Apollo 42 kg (mostly breccias) • Apollo 76 kg (basalts and breccias) • Apollo 96 kg (mostly.

F.D. Busche, G.H. Conrad, K. Keil, M. Prinz, T.E. Bunch, J. Erlichman and W.L. Quaide: Electron microprobe analyses of minerals from Apollo 12 lunar samples.

Spec. Publ. 3, UNM Institute of Meteoritics,analyses were conducted on EET Mineral chemistry was de-termined on the two thin sections using a CAMECA SX electron microprobe (EMP), at the University of Tennessee, operated at 15 kV and 20 nA, with s count times for the majority of the elements. The mineral data were corrected using the Cameca PAP correction proce-dure.

Mineral Abundances in Moon Dirt Regolith (soil) samples from the Moon have been studied for 50 years, but the abundances of minerals in the lunar soil have not been thoroughly documented. Many of us lunar petrologists examined moon soil samples in detail but did not determine the overall abundances of minerals.

Instead, we determined the abundances of mineral fragments, rock fragments, and. Arizona State University. (, February 12). Application of laser microprobe technology to Apollo samples refines lunar impact history.

ScienceDaily. Retrieved March 8, from www. Part I presents the results of a petrologic investigation of the Trinity peridotite, an enormous ultramafic massif in northern California. The Trinity is an easterly dipping sheet several km thick and composed of a diverse assemblage of ultramafic rocks including dunite, harzburgite, lherzolite, plagioclase lherzolite and clinopyroxene-rich by: 2.

Element maps were obtained with a Cameca SX electron microprobe at the Natural History Museum, London. Trace element analyses of mineral phases were obtained using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS).

Source lava flows: Various methods have been used to distinguish between different Apollo 12 basalt. A team led by ASU researchers has now refined the timeline of meteorite impacts on the moon through a pioneering application of laser microprobe technology to Apollo 17 samples.

22 lunar samples have been identified to be granitic, accounting for less than g total mass (Seddio et al. ), Apollo samples. Compared to terrestrial rocks, silica minerals are rare in lunar samples and most commonly occur as.

tailed petrographic and electron-microprobe studies of thin sections. Also included is a discussion of pos­ sible origins of the melt.

The thin sections studied in detail were subsamples 25 and 9; supplementary microprobe analyses were made on grains in sub­ samples 4, 14, 30,andand 12 other thinCited by:.

New Books Since November 9th, This list is updated every Thursday. Titles are arranged in call number order. To view previous lists, see our archives page.The lunar surface is blanketed by a mixture of unconsolidated rock, mineral and glass fragments, termed lunar regolith.

Typically, the lunar regolith, and samples of it collected by Apollo .Abstract. To study the effects of crystallization sequence and rate on trace element zoning characteristics of pyroxenes, the authors used combined electron microprobe-ion microprobe techniques on four nearly isochemical Apollo 12 and 15 pigeonite basalts with different cooling rates and crystallization histories.