Images that NASA's Mars Exploration Rover Opportunity took at the end of an 81m drive on Sept. 16 reveal a dark rock about 31m away. The rover's science team has decided to go get a closer look at the toaster-sized rock and determine whether it is an iron meteorite.

"The dark color, rounded texture and the way it is perched on the surface all make it look like an iron meteorite," said science-team member Matt Golombek of NASA's Jet Propulsion Laboratory.

Opportunity has found 4 iron meteorites during the rover's exploration of the Meridiani Planum region of Mars since early 2004. Examination of these rocks has provided information about the Martian atmosphere, as well as the meteorites themselves.

The newfound rock has been given the informal name "Oileán Ruaidh" (pronounced ay-lan ruah), which is the Gaelic name for an island off the coast of northwestern Ireland. The rock is about 45cm wide from the angle at which it was first seen.

Opportunity has driven 23,3km on Mars. The drive to this rock will take the total combined distance driven by Opportunity and its twin, Spirit, to more than 31km

JPL, a division of the California Institute of Technology in Pasadena, manages the Mars Exploration Rover mission for the NASA Science Mission Directorate, Washington. Opportunity landed on Mars in January 2004 for what was planned as a three-month mission.

Source:http://marsrovers.jpl.nasa.gov.