Apollo 14: oxide, metal, and olivine mineral chemistries in 14072 with a bearing on the temporal relationship of subsolidus reduction.
One of three primary objectives of the reported study is related to the definition of the distribution of troilite and Fe and the evaluation of the role of FeS in subsolidus reduction assemblages. Another objective was concerned with the definition of the lower limit of stabilizing elements such as Mg, Al, and Cr in ulvospinel to determine the terminal compositions at which reduction is inhibited. The third objective involves a comparison of the mineral chemistries of decomposed olivine with unaltered olivine in an attempt to determine the temperature limits. The sample was selected because it is one of the most intensely reduced samples returned from the moon. The model invoked for reduction is a magmatic-deuteric process which requires an environment approximating that of a closed system in which the volatile constituents are contained and in which reduction proceeds continuously with crystallization.
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- Lunar Soil;
- Reduction (Chemistry);
- Time Dependence;
- Apollo 14 Flight;
- Graphs (Charts);
- Tables (Data);
- Temperature Effects;
- Lunar and Planetary Exploration