10047 - Ilmenite basalt
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Fact sheet
Description: 

Sample 10047 is a relatively coarse-grained, vuggy, ilmenite basalt that formed 3.7 billion years ago (method Ar/Ar dating). It is so similar to sample 10044 that it is thought they are parts of the same block.

The rock has an ophitic texture with pyroxene enclosing earlier-formed plagioclase feldspar and ilmenite. The pyroxene exhibits extensive chemical zonation. Associated with these major species are lower abundances of olivine, pyroxferroite, zirconolite, baddeleyite, phosphate (difficult to see in our section), cristobalite, ulvospinel, troilite and a K-rich glass. The newly discovered species "tranquillityite" was also reported from this sample in 1970.

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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