15119 is a micro-porphyritic basalt with small phenocrysts of olivine set in a groundmass of granular-looking pyroxene enclosed in plagioclase. It was collected as a fragment associated with breccia in a rake sample. Pyroxene and plagioclase compose nearly 90% of the rock. Accessories include ilmenite, metallic iron and troilite.
The sample weighed 14.1 grams before analysis. It has not been dated.
Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/
The mounting resin of this thin section has started to deteriorate and delamination of the rock slice from the glass slide has occurred on the left margin.
The Apollo 15 landing site was in the Apennine Highlands, and close to Hadley Rille — a long, narrow winding valley. Approximately 76 kg of lunar material, including soil, rock, core-tube and deep-core samples, were returned to Earth.
This mission was the first flight of the Lunar Roving Vehicle which allowed the astronauts to venture further from the Lunar Module than in previous missions. During three periods of extravehicular activity, or EVA, on July 31st, and August 1st and 2nd, Scott and Irwin completed a record 18 hours, 37 minutes of exploration, travelling 17.5 miles, in the first car that humans had ever driven on the Moon.
Apollo 15 was launched on 26 July 1971.