12012 (18) - Olivine basalt
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Fact sheet
Description: 

12012 has not been well studied and no age is available. It weighed 176.2 grams before analysis. 12012 has a porphyritic-subophitic texture with partially resorbed olivine phenocrysts in a subophitic groundmass. Chrome spinel is overgrown by ulvöspinel and is associated with metallic iron.

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

In Place
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Timescale:
Not known
Ma = Millions of years ago
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Type: 
igneous
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