ArticlesMagnetic and Electrical Properties

Magnetic Properties of Lunar Sample 10048-22

Science  30 Jan 1970:
Vol. 167, Issue 3918, pp. 700-701
DOI: 10.1126/science.167.3918.700


The natural remanent magnetization (3.7 x 104 electromagnetic units per cubic centimeter) and the susceptibility per cubic centimeter (6.3 x 10-13) of an 18.5-gram breccia specimen were determined with instrumentation and techniques currently used in paleomagnetism. The relatively low magnetic stability of the rock in the earth's field and in alternating demagnetizing fields precludes considering it as a reliable carrier of paleomagnetism. A magnetic balance study yields an unusually high Curie temperature (750°C) which is possibly diagnostic of metallic Fe containing less than 5 percent nickel. The estimated relative abundance of the iron in the sample is about 0.5 percent.