I've found some more, since I'm analysing the microscopic images now of the rock ... This certainly is NO meteorite!

NASA's Mars Exploration Rover Spirit took this navigation camera image on sol 33 (February 5, 2004). In the foreground is the lander, and the untouched surface of Mars lies beyond. Spirit has since traversed across this landscape, and as of the morning of sol 105 (April 19, 2004), sits about 500 meters (1640 feet) away on the horizon (red dot). The elevated crest on the left side of the image is the rim of "Bonneville" crater, which Spirit reached on sol 65. The rover has since descended from the Bonneville rim and is traveling southeast toward the base of the "Columbia Hills" (not visible in this image).

Image credit: NASA/JPL

This cylindrical-projection mosaic was created from navigation camera images that NASA's Mars Exploration Rover Spirit acquired on sol 93 (April 7, 2004). It reveals the martian view from Spirit's position during the four-sol flight software update that began on sol 94.

Image credit: NASA/JPL

This composite image from the panoramic camera on NASA's Mars Exploration Rover Spirit gives an approximately true-color rendering of a daisy-like pattern of brushed circles that Spirit produced on a rock called "Route 66." Spirit used the rock abrasion tool to complete this 6-position "RAT daisy" on sol 99. It took this image on sol 100, April 14, 2004.

The purpose for these large brushings is to create a large enough patch of treated surface area for the miniature thermal emission spectrometer to analyze. Scientists had previously conducted a brushing like this one on the rock "Mazatzal." The brushed area of Route 66 looks very different from the brushed area of Mazatzal, leading scientists to think that the rocks – although both light in tone – actually have different coating types.

Image credit: NASA/JPL/Cornell

NASA's Mars Exploration Rover Spirit took this grey-scale panoramic camera image on sol 100, April 14, 2004. It captures Spirit's future destination at the highlands informally named "Columbia Hills". In this image, the hills are approximately 2.4 kilometers (1.5 miles) to the southeast. Scientists believe the hills may consist of different and potentially older rock units than the basalts that Spirit has observed so far.

Image credit: NASA/JPL/Cornell

This image was taken by the microscopic imager onboard NASA's Mars Exploration Rover Spirit on sol 99 (April 13, 2004). It is a close-up look at a portion of the rock called "Route 66," which was brushed by the rover's rock abrasion tool.

This image intrigues scientists because it looks very different from the microscopic images taken of other brushed rocks at the Gusev Crater location. The surface of Route 66 is very shiny and specularly reflective, which may indicate a glassy surface, or perhaps a very smooth, discontinuous coating. The unique coating appears mottled and may be multi-layered.

Other interesting features in this brushed area of Route 66 are the very thin, arc-shaped lines that are visible in the upper left quadrant of the image. An initial hypothesis suggests that these arcs may have been caused by the rock abrasion tool when the instrument made its initial contact with the surface.

Scientists will use the combined data from the rover's Mössbauer spectrometer and alpha particle X-ray spectrometer along with color versions of this image to try to reach stronger conclusions about what they are seeing and what processes caused the features.

Image credit: NASA/JPL/Cornell

This image taken by the hazard-avoidance camera on the Mars Exploration Rover Spirit on sol 99 shows the rock dubbed "Route 66" and a flower-shaped brush mark made by the rover's rock abrasion tool. The image was taken after a four-day break for flight software updates and confirms that these updates were successful.

Image credit: NASA/JPL

This image taken by the Mars Exploration Rover's panoramic camera on sol 91 (April 5, 2004) shows the rover's ultimate destination - the eastern-lying "Columbia Hills." The rover will head toward the hills in coming sols, while stopping to investigate rocks and soils along the way. Of particular interest is the light-toned coating seen here on the low-lying rocks. Scientists intend to find out if this coating is the same as that observed on the well-studied rock dubbed "Mazatzal." They believe Mazatzal's coating may have formed by cementation of airborne dust, perhaps in a slightly wetter, past environment. The scientists also plan to determine if the soil here is the same as the somewhat cohesive soil seen near the rover's lander. Like the coatings, this soil may have formed in past moist environments. This image was taken with the panoramic camera's infrared (750 nanometer) filter.

Image credit: NASA/JPL/Cornell

This mosaic image from the Mars Exploration Rover Spirit panoramic camera shows the view acquired after the rover drove 50.2 meters (165 feet) on the martian afternoon of sol 89 (April 3, 2004). The view shows the direction of the rover's future drive destination. In the distance are the eastern-lying "Columbia Hills." This image was assembled from images in the panoramic camera's green (530 nanometer) filter.

Image credit: NASA/JPL/Cornell

This enhanced false-color mosaic image from the Mars Exploration Rover Spirit panoramic camera shows the view acquired after the rover drove approximately 50.2 meters (165 feet) on the martian afternoon of sol 89 (April 3, 2004). The view shows the direction of the rover's future drive destination. In the distance are the eastern-lying "Columbia Hills." This image was assembled from images in the panoramic camera's near-infrared (750 nanometer), green (530 nanometer), and violet (432 nanometer) filters. The colors have been exaggerated to enhance the differences between cleaner and dustier rocks, and lighter and darker soils.

Image credit: NASA/JPL/Cornell

Following a long drive, NASA's Mars Exploration Rover Spirit took this backwards glance at its tracks across the landscape on sol 90 of its mission (April 4, 2004). The image is from Spirit's navigation camera.

Image credit: NASA/JPL

NASA's Mars Exploration Rover Spirit took this panoramic camera image on sol 91 (April 5, 2004). Spirit is looking to the southeast, and through the martian haze has captured the rim of Gusev crater approximately 80 kilometers (49.7 miles) away on the horizon.

The right side of this image reveals the portion of the crater edge that descends into the mouth of Ma'adim Vallis, a channel that opens into Gusev crater. Spirit is currently traveling toward the informally named "Columbia Hills," which lie to the left of the region pictured here.

This image is similar to a panoramic camera image taken on sol 68, but Gusev's ridge is more visible here because the atmospheric dust caused by winter dust storms has settled. Scientists expect to get even clearer images than this one in upcoming sols.

This image has been modified to make the crater rim more visible.

Image credit: NASA/JPL/Cornell

This 3-D cylindrical-perspective projection was constructed from a sequence of four images taken by the navigation camera onboard the Mars Exploration Rover Opportunity.

The images were acquired on sol 85 of Opportunity's mission to Meridiani Planum. The camera acquired the images at approximately 14:28 local solar time, or around 6:30 a.m. Pacific Daylight Time, on April 20, 2004.

The view is from the rover's new location, a region dubbed "Fram Crater" located some 450 meters (.3 miles) from "Eagle Crater" and roughly 250 meters (820 feet) from "Endurance Crater" (upper right).

Image credit: NASA/JPL