Lut 009, an H4 (S2, W4) ordinary chondrite meteorite from Lut Desert of Iran

نویسندگان

1 Ph.D. Student, Aix-Marseille Université/CNRS/IRD, CEREGE UM34, Aix-en-Provence, France

2 Associate Professor, Department of Geology, Faculty of Sciences, University of Tehran, Iran

3 Professor, Aix-Marseille Université/CNRS/IRD, CEREGE UM34, Aix-en-Provence, France

4 Associate Researcher, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, USA

چکیده

Lut 009 meteorite was found during a trip to Lut Desert of Iran in March,2012, at 30°20.38' N, 59°09.04' E. Chemical compositions of equilibrated olivine (Fa19.3 ± 0.5) and orthopyroxene (Fs16.7 ± 0.6) show that the meteorite sample belongs to H group of ordinary chondrites, while the texture (chondrule petrography and plagioclase size) suggests a petrologic type of 4. The Lut 009 has been very weakly shock altered and has a shock stage of S2. Fe-Ni is completely weathered whereas less than 5 percent of troilite is still present. Therefore, the meteorite has a weathering grade of W4. Magnetic susceptibility is log χ =4.75 (χ in 10-9 m3/kg) and, thus, consistent with a W4 H ordinary chondrite. Here we report description of Lut 009 in the first extended study on a meteorite from Lut Desert. Along with this sample, in-progress investigations of other meteorites from the desert will open a window into the characteristics of meteorite concentrations in this region.

کلیدواژه‌ها

عنوان مقاله [English]

Lut 009, an H4 (S2, W4) ordinary chondrite meteorite from Lut Desert of Iran

نویسندگان [English]

  • Hamed Pourkhorsandi 1
  • Hassan Mirnejad 2
  • Pierre Rochette 3
  • Jamshid Hassanzadeh 4
1 Ph.D. Student, Aix-Marseille Université/CNRS/IRD, CEREGE UM34, Aix-en-Provence, France
2 Associate Professor, Department of Geology, Faculty of Sciences, University of Tehran, Iran
3 Professor, Aix-Marseille Université/CNRS/IRD, CEREGE UM34, Aix-en-Provence, France
4 Associate Researcher, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, USA
چکیده [English]

Lut 009 meteorite was found during a trip to Lut Desert of Iran in March,2012, at 30°20.38' N, 59°09.04' E. Chemical compositions of equilibrated olivine (Fa19.3 ± 0.5) and orthopyroxene (Fs16.7 ± 0.6) show that the meteorite sample belongs to H group of ordinary chondrites, while the texture (chondrule petrography and plagioclase size) suggests a petrologic type of 4. The Lut 009 has been very weakly shock altered and has a shock stage of S2. Fe-Ni is completely weathered whereas less than 5 percent of troilite is still present. Therefore, the meteorite has a weathering grade of W4. Magnetic susceptibility is log χ =4.75 (χ in 10-9 m3/kg) and, thus, consistent with a W4 H ordinary chondrite. Here we report description of Lut 009 in the first extended study on a meteorite from Lut Desert. Along with this sample, in-progress investigations of other meteorites from the desert will open a window into the characteristics of meteorite concentrations in this region.

کلیدواژه‌ها [English]

  • Iran
  • Lut Desert
  • Meteorite
  • Ordinary chondrite

مراجع

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