7,742 research outputs found
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How Useful are High-Precision Delta ?17O Data in Defining the Asteroidal Sources of Meteorites?: Evidence from Main-Group Pallasites, Primitive and Differentiated Achondrites
High-precision oxygen isotope analysis is capable of revealing important information about the relationship between different meteorite groups. New data confirm that the main-group pallasites are from a distinct source to either the HEDs or mesosiderites
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The relationship between CK and CV chondrites: a single parent body source?
The relationship between CK and CV3 chondrites is examined. Both groups may represent a single continuum and have been derived from the same parent body
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Oxygen isotopic constraints on the origin and parent bodies of eucrites, howardites, and diogenites
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Oxygen Isotopic Constraints on the Number and Origin of Basaltic Achondrite Parent Bodies
Our data show that HED meteorites have a homogeneous oxygen isotopic composition consistent with a magma ocean on Vesta. Ibitira, Asuka 881394, Pasamonte, and NWA 1240 probably come from separate parent asteroids
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A new CO carbonaceous chondrite from Acfer, Algeria
Many small fragments, totally weighing 118 g were found in the Acfer area by an Italian dealer. Chondrules size and types (predominance of granular olivine type), occurrence of twinned clinoenstatite and absence of plagioclase suggested a classification as CO carbonaceous chondrite
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A new CK carbonaceous chondrite from Hammada Al Hamra, Libya
A single stone weighing 198 g was found in 2001 in the Hammada al Hamra region of Libya. Petrographic features (mean chondrules dimensions, coarse grained matrix and presence of AOIs and CAIs) point to a classification as CK carbonaceous chondrite
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Textural and compositional features of NWA 4222, A new Martian meteorite
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