Geochemistry and petrography of the MacAlpine Hills lunar meteorites

MacAlpine Hills 88104 and 88105, anorthositic lunar meteorites recovered form the same area in Antartica, are characterized. Petrographic studies show that MAC88104/5 is a polymict breccia dominated by impact melt clasts. It is better classified as a fragmental breccia than a regolith breccia. The b...

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Bibliographic Details
Main Authors: Lindstrom, Marilyn M., Mckay, David S., Wentworth, Susan J., Martinez, Rene R., Mittlefehldt, David W., Wang, Ming-Sheng, Lipschutz, Michael E.
Format: Other/Unknown Material
Language:unknown
Published: 1991
Subjects:
91
MacAlpine Hills
antartic*
Online Access:http://ntrs.nasa.gov/search.jsp?R=19920032184
Description
Summary:MacAlpine Hills 88104 and 88105, anorthositic lunar meteorites recovered form the same area in Antartica, are characterized. Petrographic studies show that MAC88104/5 is a polymict breccia dominated by impact melt clasts. It is better classified as a fragmental breccia than a regolith breccia. The bulk composition is ferroan and highly aluminous (Al2O3-28 percent).

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