From the MOON!!!  Now on display at the Historic Aviation Memorial Museum!

The moon rock is on loan from NASA for 6 months as of June 2, 2009.  The following is the information provided by

Lunar Sample No. 15555,462 (032)

This is a portion of the largest rock brought back from the moon by Apollo 15 Astronauts Scott, Irwin and Worden.  It was collected at the edge of a very subdued depression approximately 12 meters north of the rim of Hadley Rille.  The total weight of the rock as returned to Earth was 9613.7 grams (over 21 pounds) and was the largest rock returned to Earth up to that time.  The sample weighs 92.5 grams.  A blocky and angular vuggy rock of brownish-gray color, its texture is homogeneous with medium to coarse grain.  It is a basalt rock composed of 55% pyroxene, 26% plagioclase, 15% olivine, 3 1/2 % opaque minerals and 1/2% cristobalite.  The age of the rock is approximately 3.3 billion years as determined by radiogenic dating methods.