Petrologic and mineralogic investigation of some crystalline rocks returned by the Apollo 14 mission

Creators: Gancarz, A. J.; Albee, A. L.; Chodos, A. A.

Abstract

Apollo 14 crystalline rocks (14053 and 14310) and crystalline rock fragments (14001,7,1; 14001,7,3; 14073; 14167,8,1 and 14321,191,X-1) on which Rb/Sr, ^(40)Ar-^(39)Ar, or cosmic ray exposure ages have been determined by our colleagues were studied with the electron microprobe and the petrographic microscope. Rock samples 14053 and 14310 are mineralogically and petrologically distinct from each other. On the basis of mineralogic and petrologic characteristics all of the fragments, except 14001,7,1, are correlative with rock 14310. Sample 14073 is an orthopyroxene basalt with chemical and mineralogic affinities to 'KREEP', the 'magic' and 'cryptic' components. Fragment 14001,7,1 is very similar to Luny Rock I.

Additional Information

© 1971 Published by Elsevier B.V. Received 4 August 1971, Revised 11 August 1971. We gratefully acknowledge G.J. Wasserburg for his care and foresight in selecting fragments from the soft and breccia samples. Continuing discussions with G.J. Wasserburg and other Lunatics have proved invaluable. E.L. Haines provided the fission track data and Mr. Joe Brown meticulously prepared the micro-thin sections. This work was supported by NASA contract NAS-9-8074. The microprobe laboratory has been developed with the support of NSF, JPL and the Union Pacific Foundation.

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