14049 (39) Regolith breccia
We would like to thank the following for the use of this sample:
14049 is a very fine-grained clastic rock having less than 1 % of sub-rounded light-coloured clasts in a medium-grey matrix. It has a high carbon content and surely was derived from local soil as an “instant rock”. It has been described as a regolith breccia. 14049 has a high percentage of brown glass and agglutinates. Small fragments of plagioclase-rich granulite are also common.
The sample weighed 200.1 grams before analysis. It has not been dated.
The mounting resin of this thin section has deteriorated over time and now contains clusters of feathery crystallites within and around the margins of the thin section.
Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/
Ma = Millions of years ago
Rock forming mineral:
- metallic iron