On identifying parent plutonic rocks from lunar breccia and soil fragmentsBreccia fragments expected from a well-studied boulder of Stillwater anorthosite have been modeled to test the ability to identify parental rock types from examination of breccia and soil fragments. Depending on their size, the boulder fragments give distributions that suggest mixtures of rock types, including monominerallic anorthosite with subordinant amounts of more gabbroic anorthosite, anorthosite, and gabbro for small fragments. The distribution of FeO in samples of lunar ferroan anorthosite (FAN) indicates that FAN has a heterogeneous distribution of mafic minerals like the boulder.
Document ID
19890023481
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Haskin, Larry A. (Washington University Saint Louis, MO, United States)
Lindstrom, David J. (Lockheed Engineering and Management Services Co., Inc. Houston, TX, United States)