منابع مشابه
The Composition of the Lunar Surface Relative to Lunar Samples
Introduction: The non-mare pristine samples are divided into two major suites, the ferroan anorthosites (FAN) and the Mg-suite [1]. FAN is typically characterized by high values of plagiophile interelement ratios, for example, the calcium content of plagioclase, and very high plagioclase content (though more mafic members exist). FAN is well separated from the Mgsuite on a plot of Mg-number vs....
متن کاملOrganics in Apollo Lunar Samples
Introduction: One of many unknowns prior to the Apollo landings concerned the possibility of life, its remains, or its organic precursors on the surface of the Moon. While the existence of lunar organisms was considered highly unlikely, a program of biological quarantine and testing for the astronauts, the Apollo Command Modules, and the lunar rock and soil samples , was instituted in the Lunar...
متن کاملFormation times of Meteorites and Lunar Samples
Atopic abundances and the reso lu t ion of small t ime differ ences in the formation of p lane ta ry objects, Earth Planet. Sci Lett., 5, 3 6 1 3 7 6 , 1 9 6 9 . fmn R ®-> Heavy rare gases in silicates f rom t h e Esterville lesosiderite,X Geophys. Res., 71, 2 8 1 5 2 8 2 9 , 1966 . toin R. 0 . , Trapped neon in meteor i t e s , Earth Planet. Sci ' letl 1 1 3 1 8 , 1967 . Pepin R 0 . , and P. ...
متن کاملElectron microprobe analysis of lunar samples.
Plagioclase feldspar, clinopyroxene, and ilmenite in a polished thin section of a type A crystalline rock were analyzed. The clinopyroxene grains are compositionally variable, and both high Ca and low Ca phases are present. The plagioclase is compositionally homogeneous. The ilmenite is chemically homogeneous except for occasional, small areas of high local chromium concentration. Accessory min...
متن کاملDry separation of respirable lunar dust: Providing samples for the lunar airborne dust toxicity advisory group
In order to study the toxicity of lunar dust, the respirable size fraction of lunar soil needed to be separated with an apparatus that possesses the following capabilities: no use of liquid; fully recoverable sample; and use of only small sample quantities (o1 gm). We report the design of a simple apparatus that meets these requirements and implements an inertial-impaction mechanism established...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1972
ISSN: 0074-1809
DOI: 10.1017/s0074180900097631