Mineralogy and petrology of complex breccia 14063,14Breccia 14063,14 is a complex, probably pre-Imbrian, unmetamorphosed breccia dominated almost entirely by mineral clasts. Electron-probe and microscope examination showed at least four distinct lithologies in a centimeter-sized thin-section. Examination of each lithology showed or suggested the following contributing rock types or mineralogies: (1) dunite with minor chromite, very high-Mg ilmenite and bronzite; (2) spinel troctolite with olivine and Mg-Al spinel; (3) high-Ti mare-like basalt with high-Mg ilmenite and coarse pyroxene; (4) low-KREEP noritic breccia; (5) anorthosite; (6) very Ni-rich Fe metal.
Document ID
19770051911
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Steele, I. M. (Chicago Univ. Chicago, IL, United States)
Smith, J. V. (Chicago, University Chicago, Ill., United States)