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Feb. 9, '04 The round, shallow depression in this image resulted from history's first grinding of a rock on Mars. The rock abrasion tool on NASA's Spirit rover ground off the surface of a patch 1.8 inches in diameter on a rock called Adirondack. The hole is 0.1 inch deep, exposing fresh interior material of the rock for close inspection with the rover's microscopic imager and two spectrometers on the robotic arm. This image was taken by Spirit's panoramic camera, providing a quick visual check of the success of the grinding. Rock abrasion tools on both Mars Rovers supplied by Honeybee Robotics, N.Y.
Originally posted by ArMaP
reply to post by fazeone1981
All of those photos are available on the official site, here.
Unfortunately, and for some unknown reason, it looks like he (or someone else) used all available images from the several filters used by the cameras to make those colour images, so we get a colour that is not the famous reddish colour of the NASA photos or the more earth-like colours of the "corrected" versions.