Browsing ELibrary by Author "Ebihara M."

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CHEMICAL CHARACTERISTICS OF METAL PHASES OF THE RICHARDTON H5 CHONDRITE

Kong P.; Ebihara M.; Nakahara H.; Endo K. (1995)

The magnetic fraction was separated from the Richardton H5 chondrite with a hand magnet and was leached with concentrated HF at high temperature for different periods. The resulting metallic fractions and the untreated ...
COMPOSITIONAL CONTINUITY OF ENSTATITE CHONDRITES AND IMPLICATIONS FOR HETEROGENEOUS ACCRETION OF THE ENSTATITE CHONDRITE PARENT BODY

Kong P.; Mori T.; Ebihara M. (1997)

Chemical compositions of eleven enstatite chondrites (1 EH5, 4 EH3, 3 EL3, 1 EL5, and 2 EL6) and their metal and nonmagnetic fractions determined by instrumental neutron activation analysis are reported. The abundances of ...
DISTRIBUTION OF SIDEROPHILE ELEMENTS IN CR CHONDRITES: EVIDENCE FOR EVAPORATION AND RECONDENSATION DURING CHONDRULE FORMATION - A SURVEY

Kong P.; Ebihara M.; Palme H. (1999)

New data on the chemical composition of bulk samples, and of metallic and nonmagnetic fractions of six CR chondrites (Renazzo, Y793495, PCA91082, EET92042, Acfer 209 and El Djouf 001) are reported. It is shown that volatile ...
DISTRIBUTION OF W AND MO IN ORDINARY CHONDRITES AND IMPLICATIONS FOR NEBULAR AND PARENT BODY THERMAL PROCESSES

Kong P.; Ebihara M. (1996)

W and Mo abundances in the bulk metals of 10 H, 5 L and 6 LL chondrites were determined by instrumental neutron activation analysis (INAA). Partitioning of W and Mo between metal and non-metal phases was evaluated by ...
HIGH FLUENCES OF NEUTRONS DETERMINED FROM SM AND GD ISOTOPIC COMPOSITIONS IN AUBRITES

Hidaka H.; Ebihara M.; Yoneda S. (1999)

Large isotopic deviations of 149Sm-150Sm and 157Gd-158Gd derived from neutron capture effects were observed in five enstatite achondrites (aubrites); Norton County, ALH78113, Cumberland Falls, Bishopville and Mayo Belwa. ...
ISOTOPIC STUDY OF NEUTRON CAPTURE EFFECTS ON SM AND GD IN CHONDRITES

Hidaka H.; Ebihara M.; Yoneda S. (2000)

Isotopic compositions of Sm and Gd in eight chondrites (Mezo-Madaras, Parnallee, Otis, Suizhou, Zhaodong, Allende, Bruderheim and Y-74191) were measured to study neutron capture effects due to the interaction of cosmic ...
THE ORIGIN AND NEBULAR HISTORY OF THE METAL PHASE OF ORDINARY CHONDRITES

Kong P.; Ebihara M. (1997)

We present new INAA results for bulk metal from H and LL chondrites. Both have characteristic elemental patterns similar to L chondrite metal, in particular increasing abundances of W and Ga from unequilibrated to equilibrated ...
UREILITES: TRACE ELEMENT CLUES TO THEIR ORIGIN

Janssens M.J.; Hertogen J.; Wolf R.; Ebihara M.; Anders E. (1987)

Carbonaceous vein separates from Kenna and Haverö, as well as bulk Kenna, were analyzed by RNAA for Ag, Au, Bi, Br, Cd, Cs, Ge, In, Ir, Ni, Pd, Os, Rb, Re, Sb, Se, Te, Tl. U, and Zn. The data are reviewed together with ...

Browsing ELibrary by Author "Ebihara M."

Browsing ELibrary by Author "Ebihara M."

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