NASA Photo ID: S75-23543
Date Taken: 03/20/75

This Apollo 16 lunar sample "moon rock" was collected by Astronaut John Young, commander of the mission, is about 15 meters southwest of the landing  site. This rock weighs 128 gramms when returned to Earth. The sample is a  polymict breccia. This rock, like all lunar highland breccias, is very old,  about 3,900,000,000 years older than 99.99% of all earth surface rocks.