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/
The Apollo 14 landing site was in a region formed by impact-basin debris.
Most of the 42 kilograms of rocks and soil collected on Apollo 14 are breccias (rocks that are composed of fragments of other, older rocks). In some cases, the rock fragments that form a breccia are themselves breccias. Such rocks obviously have experienced complex histories with multiple generations of impact events. Some breccias were heated enough that some of the material in the rock was melted.
Apollo 14 was launched on 31 January 1971.