ArticlesMagnetic and Electrical Properties

Magnetic Properties of Lunar Samples

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Science  30 Jan 1970:
Vol. 167, Issue 3918, pp. 697-699
DOI: 10.1126/science.167.3918.697


The magnetic properties of samples of rock, fines, and magnetic separate from the fines from Apollo 11 have been measured. Native iron, or possibly nickel-iron, of submicroscopic particle size is the most important constituent, with minor contributions from ilmenite, paramagnetic iron minerals, and other iron-titanium oxides. The remanent magnetization of a sample of the micro-breccia rapidly acquires a viscous magnetization and does not appear to have a significant stable remanence. The crystalline sample has a weak natural remanence showing some stability.