71549 (5) Ilmenite Basalt
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Fact sheet
Description: 

71549 is a plagioclase-poikilitic ilmenite basalt that was collected as part of a rake sample. It is a coarse-grained basalt with large plates of plagioclase poikilitically enclosing crystals of pyroxene, olivine and ilmenite. Some areas have a sub-ophitic texture with intergrown plagioclase and pyroxene (rotation 1). Olivine grains are found in groups. Tranquillityite, armalcolite, Cr-spinel, rutile, zirconolite, baddeleyite, titanite and cristobalite are also reported.

The sample weighed 7.9 grams before analysis and has not been dated.

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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