Chemical evidence relating to the origin of the returned lunar material.The material returned on the Apollo 11 mission can be separated into four types on chemical as well as structural grounds. Two distinct crystalline rock types can be identified, which may have been formed during two separate magmatic events. The lunar soil and breccias (which are apparently impacted soil material) can be thought of as being composed of a crystalline rock component similar in composition to, but differing in detail from, the two types of Apollo 11 crystalline rocks, and anorthositic component amounting to about 20% in the lunar soil, and a meteoritic component resembling carbonaceous chondrites in composition. Data on Ga, Ge, In, Ir, and Au in Apollo 11 rocks reflect the high temperature history of the lunar surface material, and the presence of a meteoritic component in the soil and breccias.
Document ID
19720056176
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Baedecker, P. A. (California, University Los Angeles, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1971
Subject Category
Chemistry
Meeting Information
Meeting: Activation analysis in geochemistry and cosmochemistry; Advanced Study Institute