Anorthosite is a relatively lightweight silicate rock that forms much of the ancient crust of the Moon.
Scientists needed to find it on the surface of the Moon to prove the theory that the Moon was once
molten, and formed layers of different density rock and metal as it cooled.
The crew of Apollo 15 finally found and collected the prize sample from the lunar
surface, which came to be called the "Genesis Rock", due to its extreme formation age.
This beautiful sample of terrestrial anorthosite was collected from the same place the astronauts
were trained before flight by their geology teachers. By learning to recognize this rock, they were
able to succeed in their search on the Moon.
Presented on an 7 X 9 inch two toned (walnut and oak) real wood plaque with an
engraved title plate, this display sample is the size of a fist -- about the same size as the
priceless "Genesis Rock" itself.
NOT A MOON ROCK BUT AN ANALOG.
FREE "Pocket Guide to Lunar Mineralogy " booklet with this item.