71559 (7) Ilmenite Basalt
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Fact sheet
Description: 

71559 and companion samples 71536, 71539 and 71568 are coarse-grained ilmenite basalts with salt and pepper texture. They are unusual in that they have only moderate Ti contents. They are rake samples. 71559 has a subophitic-granular texture with blocky ilmenite and little or no olivine. Grain size is 1–2 mm. Pyroxene has extreme iron enrichment. Rotation 1 shows cristobalite associated with ilmenite. Rotation 2 shows plagioclase feldspar with benttwin  lamellae. The dendritic crystal in this rotation is a sample preparation artifact.

The sample weighed 82.1 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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Timescale:
Not known
Ma = Millions of years ago
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igneous
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