Other
Scientific paper
Jul 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000m%26ps...35..875p&link_type=abstract
Meteoritics & Planetary Science, vol. 35, no. 4, pp. 875-879 (2000).
Other
8
Scientific paper
GRO 95555 is a relatively newly discovered and unique metamorphic diogenite. It does not show the usual brecciated appearance of other diogenites or wide compositional variability of orthopyroxene or spinel. EMP and SIMS analysis of orthopyroxene and EMP analysis of spinel show limited compositional variability and compositions for orthopyroxene for Fe/(Fe+Mg) atomic, Al, Zr, Y, and Yb fall in the middle of the compositional ranges of the diogenite suite. Apparently GRO 95555 formed at sufficient depth and/or at a location to escape brecciation by meteorite bombardment and in a thermal regime that led to high-grade metamorphism resulting in homogeneous mineral compositions.
Karner James M.
Papike James J.
Shearer Charles K.
Spilde Michael N.
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