Silicon in carbonaceous chondrite metal: relic of high-temperature condensation.
نویسندگان
چکیده
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 l0(-5) less, similar P(tot) < l0(-3) atmosphere, provided they failed to equilibrate with it after cooling to < 1200 kelvins.
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عنوان ژورنال:
- Science
دوره 206 4417 شماره
صفحات -
تاریخ انتشار 1979