ADVANCES IN POLAR SCIENCE ›› 2002, Vol. 14 ›› Issue (4): 320-329.

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STUDIES ON THE TYPES OF 28 ANTARCTIC METEORITES

  

  • Online:2002-12-30 Published:2002-12-30

Abstract:

The 28 Antarctic meteorites have been collected for the second time from the Grove Mountains of East Antarctica, during the 16th Chinese National Antarctic Research Expedition in 1999-2000 austral season. The 28 meteorites are all stones. According to the chondrule growing the meteorites can be divided into 5 types. GRV 99018 and GRV 99027 are achon-drites, other 26 meteorites are ordinary chondrites. These meteorites belong to different chemical groups ; H-group 5 , H/L-group 1, L-group have 9 , L/LL-group 2, LL-group 6, and L-group 3. Their petrologic types are: uneqquilibrated ordinary chondrites 5, the eqquilibrated ordinary chondrites 21. The majority are of types 4-6.