Compositional constraints on the genesis of diogenites

– We have done bulk rock compositional analyses (INAA, ICP‐MS) and petrologic study of a suite of diogenite meteorites. Most contain orthopyroxenes with mg#s of 70.6–79.0. Meteorite Hills (MET) 00425 is magnesian (mg# of 83.9). Lewis Cliff (LEW) 88011 contains orthopyroxene grains of varying mg# (76...

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Bibliographic Details
Published in:Meteoritics & planetary science 2012-01, Vol.47 (1), p.72-98
Main Authors: MITTLEFEHLDT, David W., BECK, Andrew W., LEE, Cin-Ty A., McSWEEN Jr, Harry Y., BUCHANAN, Paul C.
Format: Article
Language:English
Subjects:
Geochemistry
Magma
Mineralogy
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Summary:– We have done bulk rock compositional analyses (INAA, ICP‐MS) and petrologic study of a suite of diogenite meteorites. Most contain orthopyroxenes with mg#s of 70.6–79.0. Meteorite Hills (MET) 00425 is magnesian (mg# of 83.9). Lewis Cliff (LEW) 88011 contains orthopyroxene grains of varying mg# (76.3–68.6). Queen Alexandra Range (QUE) 93009 (orthopyroxene mg# 70.6) contains coarse‐grained noritic clasts (plagioclase An84.7–88.3), and is rich in incompatible trace elements. It has Eu/Eu* 
ISSN:1086-9379
1945-5100
DOI:10.1111/j.1945-5100.2011.01314.x