Neutron Activation Analysis of Milligram Quantities of Lunar Rocks and Soils

Details Neutron Activation Analysis of Milligram Quantities of Lunar Rocks and Soils Neutron Activation Analysis of Milligram Quantities of Lunar Rocks and Soils

Jan 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970sci...167..507t&link_type=abstract

Science, Volume 167, Issue 3918, pp. 507-509

Physics

1

Scientific paper

A neutron activation scheme for determining 25 elements in lunar samples weighing 20 milligrams is described and applied to a suite of Apollo 11 lunar materials. Concentrations of titanium, chromium, scandium, tantalum, hafnium, and rare earths are higher than in average basalt, whereas cobalt, nickel, and copper are lower. Chemical variations show groupings of elements possibly associated with the major phases, pyroxene, plagioclase, and ilmenite. The high concentration of "refractory oxides" and low volatile content implies that the raw material for the Apollo 11 samples was condensed from the primitive solar nebula at high temperatures.

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