Труды российских конференций

For 50 years which have passed after opening of effect, mossbauerspectroscopy (МS) has come from trial experiments with various soil-mineral objects to regular studying of the fundamental processes proceeding in soils (Babanin et al., 1995). Research soilsofMars by means of МS only begins (Morriset al., 2005) whereas for other objects of Solar system (for example, the Moon, meteorites) is observed considerable progress, and there is an extensive information (Malysheva, 1974; Rusakov, 2000). Exclusive prevalence of iron in the nature allows to make comparative measurements of ferriferous minerals irrespective of a place or character of an origin of the material in Solar system.

Irrespective of geography and an origin of investigated objects everymossbauer spectrum represented aggregate portions spectra from several paramagnetic and magnetically ordered phases. The given circumstance has demanded to develop the following methodology. The samples of a terrestrial origin with known mineralogical structure have been specially selected for comparison on external similarity of spectra soil Mars. Thus for the terrestrial samples it was considered a possibility of reception of the additional information with the help X-ray analysis, magnetic measurements, chemical methods etc.

The magnetic fraction has been allocated for more correct interpretation mossbauer spectra from a part of samples. In addition thermal annealing and modelling experiments (for example, controllable humidifying by steams of water for system FeCl₃- FeCl₃·nH₂O) was made.As a result of the analysis of spectra of all tests of terrestrial and unearthly substance following ferriferous phases have been revealed: paramagnetic phases (olivine, pyroxene, amphibole) and magnetically order phases (magnetite (Fe₃O₄), goethite (α-FeOOH), hematite (α-Fe₂O₃), akaganeite (β-FeOOH)).

The received results allow to make a conclusion on unity of structure of terrestrial and space bodies, and partially to remove some debatable hypotheses. For example, water existence in the past on a surface of Mars and an origin of the increased maintenance magnetite in top horizons of soils of the Earth.

Babanin V. F., Truhin V. I., Karpatchevkii L.O., et al.Soil Magnetism. 1995 Moscow, Yaroslavl. 223

Morris R., Klingelhoefer, Bernhardt, et al. Science. (2004) 305, Issue 5685, 833

Malysheva T.V. Effect Мossbauer in geochemistry and cosmochemistry. 1975 "Nauka". 168

V.S.Rusakov Mossbauer spectroscopy of locally non-uniform systems. 2000 Almaty. 431