60518 (3) Cataclastic Anorthosite
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Fact sheet
Description: 

60515 through to 60519 are small rake samples from the lunar module site at Apollo 16. They all look alike, but could be different samples, because the surfaces are mostly coated with micrometeorite craters. All are cataclastic anorthosite – of the ferroan variety. They contain about 98% plagioclase (An97) and 1-2 % pyroxene. Rotation 1 shows a plagioclase feldspar clast containing shock deformation features. Rotation 2 shows a small pyroxene crystal amongst fragmented plagioclase.

The sample weighed 1.2 grams before analysis and has not been dated.

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

The rounded marks and some linear features are artefacts introduced during the thin section making process.

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Timescale:
Not known
Ma = Millions of years ago
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Type: 
metamorphic
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