Prognosis of iron and titanium distributions on the lunar surface for comparison with the «Lunar Prospector» data

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Astronomy and Astrophysics
1Shkuratov, Yu.G, 2Kaydash, VG, 2Opanasenko, NV, 2Stankevich, DG, 3Parusimov, VG
1Institute of Astronomy of V. N. Karazin National University of Kharkiv, Kharkiv, Ukraine; Institute of Radio Astronomy of the National Academy of Sciences of Ukraine, Kharkiv, Ukraine
2Institute of Astronomy of V.N. Karazin National University of Kharkiv, Kharkiv, Ukraine
3Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine
Kosm. nauka tehnol. 1997, 3 ;(2):59–70
https://doi.org/10.15407/knit1997.03.059
Publication Language: Russian
Abstract: 
Lunar nearside maps of iron and titanium distributions were made up. The purpose of this mapping is to compare its results with the data of geochemical survey which is planned in the «Lunar Prospec­tor» mission. The maps are made from optical measurements in four spectral bands: /U 0.42, 0.65, 0.75, 0.95 цт. То calibrate the maps, the chemical content data for «Apollo», «Luna», «Surveyor» landing sites were used. A model of light scattering was used to go from optical characteristics of scattering medium to substance parameters. The maps are presented in the right orthographic projection. Histograms of the parameters studied were calculated. In particular, the iron distribution is bimodal with maxima at 6 % and 17 %. The iron—titanium correlation diagram was built; analysis of this diagram made with the use of additional landing site data shows that the majority of landing sites belong to nontypical combinations of iron and titanium abundances. The map of typical FeO and TiO2 content combinations was made up. According to this map, basalts of Mare Tranquillitatis with high titanium content and low iron concentration are not typical for the Moon nearside.
Keywords: Lunar Prospector, lunar surface, Moon
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