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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.
	EDS spectrum of light-colored element in corrosion residue from EY56, Western Borehole. Spectrum shows strong barium and sulfur peaks, possibly indicating the presence of barite in the sample. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.
	EDS spectrum of barite crystals in a conglomeration of clay and iron from EY56 in the Western Borehole. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

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