Iron Mössbauer spectra of lava from Jeju island and its similarities to Moon basalts

Details Iron Mössbauer spectra of lava from Jeju island and its similarities to Moon basalts Iron Mössbauer spectra of lava from Jeju island and its similarities to Moon basalts

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990hyint..57.2221h&link_type=abstract

Hyperfine Interactions, Volume 57, Issue 1-4, pp. 2221-2225

Computer Science

Scientific paper

We report the result of measurements of the57Fe Mössbauer spectrum for powder samples of lava taken from four widely separated sites on Jeju island. The spectra consist of well defined quadrupole doublets having a 2+ charge state and indicate the presence of olivine, clinopyroxene, and ilmenite. In addition we find a six line magnetically split hyperfine pattern characteristic of impure hematite, with considerable line broadening and reduced internal field. The observed spectra have a remarkable similarity to those found for moon basalts. A recently popularized “collision ejection” model for the moon formation would be consistent with our observations. The data is a particularly simple and direct illustration of the well-known fact that the iron silicates and ilmenite found on the moon are very similar in composition and relative abundance to that found on earth.

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