Chinese Journal of Polar Research

ADVANCES IN POLAR SCIENCE ›› 2005, Vol. 16 ›› Issue (1-English): 13-22.

• Contents • Previous Articles     Next Articles

Chemical compositions and cassfication of Grove Mountains(GRV)98003 and other Chinese iron meteorites

Wang Daode1 and Lin Yanting1,2   

  1. 1 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640;
    2 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029
  • Online:1955-03-30 Published:1955-03-30
  • Contact: Wang Daode

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Abstract:

Concentrations of Cr, Co, Ni, Cu, Ga, Ge, As, Sb, W, Re, Ir, Pt and Au of two ungrouped iron meteorites, Grove Mountains (GRV) 98003 from Antarcti- ca and Ujimqin, were measured using instrumental neutron activation analysis. According to the bulk chemistry, GRV 98003 is classified as a member of IAB group, and Ujimqin as a unique one of IAB iron meteorite complex. The elemental abun- dance pattern and correlation between elements (e.g. Ni-Au, Co-Au, As-Au, W-Au, Cu-Au, Sb-Au) of GRV 98003 are similar with those of NAW 468 (IAB), but significantly depleted in refractory siderophile elements (Re, It) and moderate volatile elements (Ga, Ge) relative to the latter. In addition, we reclassify Nantan (Ⅱ- ICD) as a member of IAB main group (MG) and Yongning (IA) as a unique iron meteorite related with IAB iron meteorite complex.

Key words: Antarctica, Grove Mountains, classification, iron meteorite, trace elements, INAA