14267 (59) Vitric–matrix Breccia
We would like to thank the following for the use of this sample:
Like 14250, sample 14267 is part of the Comprehensive Sample collected by Apollo 14. It is a glass-coated soil breccia with a frothy glass coating on one surface. 14276 is a fine-grained, coherent, polymict breccia with a dark matrix of vitreous appearance. There are more lithic fragments than mineral or glass fragments. There are minute vesicles and iron grains in the glassy matrix. Clasts include glass, basalts, metaclastic breccias and mineral grains. Shock feature are prevalent. The majority of the vitric clasts show flow-banding (rotation 1).
The sample weighed 54.77 grams before analysis and has not been accurately dated.
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