New rock type found on moon

Odd spots on the lunar farside could be ancient material from deep inside

By Alexandra Witze, 15:27 PM November 3, 2010

DENVER — For the first time in decades, astronomers have identified a new rock type on the moon. Tucked away on the lunar farside, unseen until a space probe spotted its odd mineralogy, are a few deposits of what is probably ancient material that originated deep inside the moon.

“These are very unusual areas,” said Carle Pieters, a planetary geologist at Brown University in Providence, R.I., who reported the finding November 2 at a meeting of the Geological Society of America.

Pieters has ...

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