Chemical fractionations in meteorites. X - Ureilites

Details Chemical fractionations in meteorites. X - Ureilites Chemical fractionations in meteorites. X - Ureilites

Dec 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976gecoa..40.1563h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 40, Dec. 1976, p. 1563-1571.

Computer Science

11

Achondrites, Chemical Fractionation, Meteoritic Composition, Neutron Activation Analysis, Radiochemical Separation, Trace Elements, Ureilites, Asteroids, Carbon Monoxide, Carbonaceous Rocks, Graphite, Iridium, Meteoritic Diamonds, Rhenium

Scientific paper

An investigation involving the measurement of 17 trace elements in 4 ureilites was conducted with the objective to obtain information for the characterization of the two components of the ureilites. The groundmass of the mineral is an olivine-clinopyroxene rock which is presumably the residue left after partial melting of a more primitive precursor. This ultramafic rock is permeated by a network of veins containing diamond, graphite, nickel-iron, and primordial noble gases. Attention is given to the vein material, the origin of the vein material, the 'constant' siderophile component and ultramafic rock, and questions concerning the origin of ureilites.

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