10024 - Ilmenite basalt
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Fact sheet
Description: 

10024 is a medium-grained ilmenite rich basalt with high potassium. This is one of the contingency samples collected soon after Apollo 11 landed in case the crew had to abandon later parts of the mission and return to Earth quickly. The basalt was erupted and crystallised 3.6 billion years ago and has been exposed at the surface for around 360 million years.

The major constituents of this sample seen in thin section are plagioclase feldspar and two species of pyroxene - augite and pigeonite. Large grains of cristobalite have also been reported, but these are very uncommon. The holes that can be seen in the thin section views are vesicles - evidence of volcanic gases that were trapped during the formation of this rock.

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

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