ADVANCES IN POLAR SCIENCE ›› 2013, Vol. 25 ›› Issue (4): 386-393.DOI: 10.3724/SP.J.1084.2013.00386

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CHEMICAL AND PETROLOGIC STUDY OF THE HEYETANG METEORITE

Shen Wenjie1, 2, 3, Hu Sen3, Lin Yangting3, Miao Bingkui4   

  1.  
    1Department of Earth Sciences, Sun Yat-sen University, Guangzhou 510275, China;
    2Guangdong Key Laboratory of Geological Process and Mineral Resources Exploration, Guangzhou 510275, China;
    3Key Laboratory of the Earth’s Deep Interior, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    4College of Earth Sciences, Guilin University of Technology, Guilin 541004, China
  • Received:2013-04-03 Revised:2013-07-10 Online:2013-12-30 Published:2013-12-30

Abstract: Heyetang meteorite is an ordinary chondrite falling in 1998.. Petrologic subtype of Heyetang meteorite was determined on the basis of detailed petrologic and mineralogical characteristics. The mean value of Fa in olivine is 23.2 with the range from 0.6 to 48.8(percent mean deviation (PMD) = 60.1%). The mean value of Fs in low-Ca pyroxene is 9.1 with the range from 0.6 to 49.0(PMD = 97.5%). Thus, it is an unequilibrated 3 type ordinary chondrite(OC). The chemical group was indicated by Fa value, total content of Fe-Ni metal and troilite, Co and Ni contents in kamacite and it actually has L group features. According to PMD of Fa content in olivine, Cr2O3 content in olivine and Ni-rich metals in chondrules, petrologic subtype of Heyetang meteorite belongs to L3.3 type OC. And it is one of the most primitive chondrite in the non-Antarctic meteorites in China.

Key words: Heyetang, Ordinary meteorite, Unequilibrated meteorite, Type L3.3