Can enstatite meteorites form from a nebula of solar composition? |
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| Authors: | JM Herndon HE Suess |
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| Institution: | Department of Chemistry, University of California, San Diego, La Jolla, California 92039, U.S.A. |
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| Abstract: | Doubts have been expressed as to whether solar matter is sufficiently reducing to explain the minerals occurring in the enstatite chondrites and in the enstatite achondrites. Thermodynamic calculations on the stabilities of TiN, Si2N2O, CaS and silicon-bearing iron metal show that these substances can form under equilibrium conditions from a nebula of solar composition provided that the total pressure exceeds ~ 1 atm and that thermodynamic equilibria are frozen in at near-formation temperatures. |
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