14073 (8) Basalt
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Fact sheet
Description: 

14073 is a sub-ophitic, intergranular to intersertal, orthopyroxene basalt with KREEP “affinity”. It is composed of 50% plagioclase, 25% clinopyroxene, 20% orthopyroxene with minor ilmenite (2%), troilite, metallic iron, phosphates(2), Fe-Ti-Zr silicates and groundmass. 14073 may be a clast-free impact melt rock like 14310.

The sample weighed 10.35 grams before analysis and is 3.88±0.05 billion years old (Ar/Ar).

KREEP is an acronym built from the letters K (the atomic symbol for potassium), REE (Rare Earth Elements) and P (for phosphorus). It is a geochemical component of some lunar impact breccia and basaltic rocks.

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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