A geochemical and petrographic study of 1 - 2 mm fines from Apollo 17.
Abstract
Samples of fines less than 1-mm and 155 1-2 mm particles from several Apollo 17 sites were analyzed for Na, Sc, Cr, Mn, Fe, Co, Ni, Hf, Ta, Th, and REE. Products of comminution and construction are present in the 1-2 mm particles, and the compositions of the rock fragments clearly indicate the general chemical characteristics of their parent rock types. The likely sources of materials for the glassy particles are considered. Glasses are enriched over their parent soils in Fe, Sc, Mn, and Cr, and are relatively enriched in light REE, so that some chemical fractionation accompanies glass-forming processes. Elements were determined by instrumental neutron activation analysis.
- Publication:
-
Lunar and Planetary Science Conference Proceedings
- Pub Date:
- 1975
- Bibcode:
- 1975LPSC....6.2321B
- Keywords:
-
- Apollo 17 Flight;
- Chemical Composition;
- Fines;
- Lunar Geology;
- Lunar Rocks;
- Lunar Soil;
- Chemical Fractionation;
- Igneous Rocks;
- Lunar Landing Sites;
- Lunar Maria;
- Neutron Activation Analysis;
- Petrography;
- Rare Earth Elements;
- Lunar and Planetary Exploration