Apatite

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	SEM image of the ocher-colored corrosion residue from EY56, Western Borehole. Light-colored areas of image may be apatite and barite. See EDS analysis below. Photo by Spilde, Northup, and Boston.
	SEM image of a putative apatite crystal in the outer wall rock sample from EY56 in the Western Borehole. Photo by Spilde, Northup, and Boston.
	EDS spectrum of bright particles in outer wall rock sample from EY56 site in the Western Borehole. Peaks suggest the presence of apatite. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

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