Computer Science
Scientific paper
Feb 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..217b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 44, Feb. 1980, p. 217-219, 221-223. NASA-supported research.
Computer Science
8
Metal Particles, Meteoritic Composition, Nebulae, Refractory Metals, Computer Programs, Cosmology, Inclusions, Meteorites, Allende Meteorite, Metals, Particles, Refractory Elements, Inclusions, Temperatures, Oxides, Observations, Condensation, Nebulas, Electron Microprobe, Calcium, Aluminum, Silicon, Magnesium, Iron, Nickel, Molybdenum, Osmium, Rhenium, Ruthenium, Tungsten, Iridium, Pressure, Comparisons, Nucleation, Gases, Sulfides, Analysis, Vapor, Abundance, C1 Chondrites, Alloys
Scientific paper
Refractory metal particles containing Os, Re, W, Mo, Ir, and Ru were observed in a Ca-Al-rich inclusion in the Allende meteorite. These particles are the closest to unaltered primordial metal condensates from a nebula yet reported, and appear to have been isolated from the nebula before the condensation of refractories was complete. Computer calculations of condensation indicate that the temperature of isolation appears to be close to the calculated temperature of first formation of oxides (about 1620 K at 0.0001 atm) indicating that isolation may have been effected by coating of the particles by oxides.
Blander Milton
Fuchs Louis H.
Horowitz Charles
Land R.
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