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... as seen on May 28, 2010. A familiar sight to almost everyone who's been down Racetrack Valley to see the Racing Rocks. Also, even though it's a little less geological than the other GigaPans in the Death Valley NP Geology gallery, I just couldn't resist including it.
This is a thin section of dunite, a rock made up almost entirely of the mineral olivine, as seen in cross-polarized light through a Leica Z6 APO Macroscope. There is a band of black mineral grains to the left of center of the image that is a cumulate layer of the mineral chromite - in the magma chamber from which these...