10045 - Ilmenite basalt
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Fact sheet
Description: 

Sample 10045 is a fine-grained, vuggy to vesicular, ophitic olivine basalt. It crystallised 3.8 billion years ago and has been exposed at the surface for around 110 million years.

The thin section of this sample predominantly consists of equant ilmenite crystals and laths of plagioclase feldspar enclosed by pyroxene. Olivine is a minor constituent (3%), that is often enclosed by pyroxene. Chromite, cristobalite, apatite, K-feldspar, troilite and metallic iron are rare but have been reported in this sample. The very rare mineral species armalcolite, named after the three astronauts who were involved in its transfer to Earth, is also present in 10045, but its very difficult to see. It is reported as an exsolution product within ilmenite grains.

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
In Focus
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Type:
Type: 
igneous
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