On the location of acid-hydrolysable carbon in lunar soil fines

Details On the location of acid-hydrolysable carbon in lunar soil fines On the location of acid-hydrolysable carbon in lunar soil fines

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982e%26psl..59...28f&link_type=abstract

Earth and Planetary Science Letters, vol. 59, no. 1, June 1982, p. 28-32. Research supported by the Science and Engineering Res

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Carbon, Fines, Hydrolysis, Iron, Lunar Composition, Lunar Soil, Metal Particles, Acids, Ferromagnetic Resonance, Iron Oxides, Magnetization, Methane, Particle Size Distribution, Remanence, Solid Solutions, Moon, Soils, Fines, Carbon, Composition, Phases, Iron, Hypotheses, Concentrations, Magnetic Properties, 12023, Samples, Lunar, Resonance, Ferromagnetism, Density, Irm, Isothermal Remanent Magnetization, Data, Formation, Remanent Magnetization

Scientific paper

Soil fines exposed on the lunar surface accumulate small metallic iron particles and solar wind-derived carbon. In previous work, it has been suggested that an intimate association exists between one particular carbon phase, hydrolysable carbon, and very fine iron droplets, where the carbon is in solid solution in the iron. The earlier hypothesis of a constant carbon in iron concentration across a broad range of droplet sizes is testable by combining hydrolysable carbon determinations with a variety of magnetic measurements sensitive to different droplet diameters. New measurements of ferromagnetic resonance response on density and magnetic separates from size fractions of soil 12023 are interpreted as evidence that hydrolysable carbon is preferentially associated with the larger, magnetically stable single-domain iron particles rather than with the smaller superparamagnetic droplets. For the former, there is a quite uniform ratio of iron to carbon both within a series of separates from a single soil, and among soils of widely varying FeO content.

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