Silicon in Carbonaceous Chondrite Metal: Relic of High-Temperature Condensation
- 26 October 1979
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 206 (4417) , 449-451
Abstract
Electron microprobe analyses of an extraordinarily large metal grain from the Murchison type 2 carbonaceous chondrite gave 0.24 mole percent silicon. Thermodynamic calculations show that this is a natural consequence of condensation of alloys from the solar nebular gas at a total pressure 10 –5 ≲ P tot < 10 –3 atmosphere, provided they failed to equilibrate with it after cooling to < 1200 kelvins.Keywords
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