67567 is a glass-laden fragment collected in a rake sample. The glass has devitrified and appears now as fine-grained to coarse-grained acicular crystallites. There is a gradation in size from one end of the thin section to the other indicating variable cooling rates on a micro-scale. Rotation 1 shows the structure of the coarser crystallites. Rotation 2 shows an unaltered plagioclase feldspar clast associated with spherical vesicles.
The sample weighed 11.5 grams before analysis and is reported to be 0.84 billion years old (Ar/Ar).
Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/
The Apollo 16 landing site was in the hilly region around Descartes crater in the lunar highlands. The landing spot was chosen to allow the astronauts to gather geologically older lunar material (Descartes Formation and the Cayley Formation) than the samples obtained in the first four landings, which were in or near lunar maria.
The mission lasted 11.1 days, with a stay on the lunar surface of 71 hours. The crew were on the lunar surface for 20.2 hours during which they traversed approximately 27 kilometers and collected approximately 96 kilograms of samples.
Apollo 16 was launched on 16 April 1972.