Some Characteristic Magnetic Properties of Lunar Materials

Details Some Characteristic Magnetic Properties of Lunar Materials Some Characteristic Magnetic Properties of Lunar Materials

Mar 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974moon....9...63n&link_type=abstract

The Moon, Volume 9, Issue 1-2, pp. 63-77

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Scientific paper

One of the typical magnetic characteristics of lunar materials is the composition of their ferromagnetic constituent. Lunar breccias often contain kamacite (less than 7 weight per cent of Ni content) as well as almost pure metallic iron. Metallic ferromagnetics in most igneous rocks are almost pure iron, but the kamacite phase also has been found in some Apollo 15 igneous rocks. It seems likely therefore the metallic ferromagnetics in the lunar crust are more or less similar to those in chondrites. Another typical magnetic characteristic of lunar materials is the presence of a considerable amount of superparamagnetically fine particles of metallic iron. A higher relative content of such fine iron particles results in a higher value of the ratio of magnetic susceptibility (χo) to saturation magnetization (I s), a smaller ratio of the coercive force (H c) to remanence coercive force (H RC), and an extremely higher ratio of the viscous component (ΔI v) to the stable one (I s) of the remanent magnetization.

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