15145 (8) Mare Basalt Breccia
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Fact sheet
Description: 

15145 is a breccia which appears to be almost monomict and formed of coarse mare basalt clasts. It is light grey, subangular, and tough. It was collected as part of a rake sample. 15145 consists predominantly of clasts of coarse mare basalts (see rotation 1) in a ground up, mainly mare-derived breccia. Very large pyroxenes (about 3 mm across) are commonly twinned, without obvious zoning. A few fine-grained and recrystallized mare basalt clasts are also present (see rotation 2), along with a few glass spherules and chondrules. Our thin section also contains a significant norite clast near rotation 2.

The sample weighed 15.1 grams before analysis and has not been dated.

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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metamorphic
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