71037 (5) Vesicular Ilmenite Basalt
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Fact sheet
Description: 

Lunar basalts 71035, 71036, 71037 and 71055 were all chipped from the top of a 0.5 m tall boulder. All samples are the same kind of high-Ti basalt with low olivine (rotation 1) and silica contents. These samples are all very vesicular - up to 30%. Vugs extend up to 12 mm. The texture has been described as plagioclase-poikilitic. Average grain size is 1–2 mm with seriate grain size distribution. The largest pyroxene grains (up to 2 mm) are typically composite and composed of pale-pink (Al- and Ti-poor) to dark-pink (Al- and Ti-rich) arranged in parallel bands, in a radiating spherulitic pattern (rotation 2), or forming an hourglass structure.

The sample weighed 14.39 grams before analysis and has not been dated.

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

In Place
In Time
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
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Type:
Type: 
igneous
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