67756 is a rake sample collected from the rim of North Ray Crater. It is a plagioclase-rich breccia, with minerals that seem to have equilibrated – hence it is described as “recrystallized”. Rotation 1 shows a complex devitrified glass clast containing lithic fragments and rotation 2 shows rounded clasts of plagioclase feldspar.
The sample weighed 4.8 grams before analysis and has not been dated.
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.