12043 (6) - Pigeonite basalt
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Fact sheet
Description: 

12043 is a medium-grained pigeonite basalt with 10% large (3 mm), prismatic phenocrysts of pyroxene and olivine set in a subophitic to variolitic groundmass of pyroxene, plagioclase, ilmenite, chromite, cristobalite, metallic iron and mesostasis. Olivine phenocrysts are embayed, and overgrown by pyroxene. Phenocrysts of pyroxene display considerable compositional zonation.

The sample weighed 60 grams before analysis. It has not been dated.

Curiously, Charles Meyer, compiler of the Lunar Compendium describes this sample as a "little potato". To this we add that it is also one of the most beautiful samples (in thin section) to have been collected on the Moon.

Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/

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Not known
Ma = Millions of years ago
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igneous
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