FeatureGems & Gemology, Fall 2011, Volume 47, No. 3

Identification of Extraterrestrial Peridot by Trace Elements

Andy H. Shen(安迪·H·申), John I. Koivula(约翰· I.·科伊武拉), James E. Shigley

Twenty-six peridot samples from the Esquel pallasite meteorite and 27 samples from 10 terrestrial sources were studied by laser ablation–inductively coupled plasma–mass spectrometry (LAICP- MS). Among the 32 elements analyzed, six of them—Li, V, Mn, Co, Ni, and Zn—provided an excellent separation between pallasitic and terrestrial peridot.

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