71175 (34) Ilmenite Basalt
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Fact sheet
Description: 

71175 is an equigranular basalt found partially buried near the 71135-71155 boulder. It has a subophitic texture with long crystals of plagioclase (> 2mm) intergrown with compositionally zoned and twinned pyroxene (rotation 2). Abundant equigranular ilmenite is sprinkled throughout. Large (up to 0.8 mm) regions of silica are reported (see rotation 1). Minor olivine and cristobalite (small crystal in rotation 1) are also present.

The sample weighed 207.8 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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