Wall Rock

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SEM image (3,000x) of limestone grains. Individual calcite grains are approximately 2.5 microns with smooth intergrown blocks with no pits. Samples are Au-Pd coated. Photomicrograph by Spilde.

EDS spectrum of previous image of limestone grains, showing that the limestone is pure calcite. Samples are Au-Pd coated. Analysis by Spilde.

EDS spectrum of large crystal in the inner wall rock at EY56 in the Western Borehole. EDS suggests the crystal is calcite. EDS of several locations within the inner wall rock at this location showed the same composition whether they were defined crystals or not. Some had a little more magnesium. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

EDS spectrum of inner wall rock from EY56 in the Western Borehole. Notice the presence of sulfur, potassium, and iron peaks in addition to the clay elements. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

EDS spectrum of bright particles in outer wall rock sample from EY56 site in the Western Borehole. Peaks include iron, vanadium, oxygen, silicon, and aluminum. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

SEM image of dolomite in the outer wall rock sample from EY56 site in the Western Borehole. 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.

EDS spectrum of the area between the larger dolomite crystals in the outer wall rock sample from EY56 site in the Western Borehole. A strong iron signal is observed. Not shown, but detected in the surrounding areas are barite crystals and gypsum particles. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

EDS spectrum of bright crystals the outer wall rock sample from EY56 site in the Western Borehole. A strong iron signal is observed. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

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	SEM image (3,000x) of limestone grains. Individual calcite grains are approximately 2.5 microns with smooth intergrown blocks with no pits. Samples are Au-Pd coated. Photomicrograph by Spilde.
	EDS spectrum of previous image of limestone grains, showing that the limestone is pure calcite. Samples are Au-Pd coated. Analysis by Spilde.
	EDS spectrum of large crystal in the inner wall rock at EY56 in the Western Borehole. EDS suggests the crystal is calcite. EDS of several locations within the inner wall rock at this location showed the same composition whether they were defined crystals or not. Some had a little more magnesium. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.
	EDS spectrum of inner wall rock from EY56 in the Western Borehole. Notice the presence of sulfur, potassium, and iron peaks in addition to the clay elements. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.
	EDS spectrum of bright particles in outer wall rock sample from EY56 site in the Western Borehole. Peaks include iron, vanadium, oxygen, silicon, and aluminum. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.
	SEM image of dolomite in the outer wall rock sample from EY56 site in the Western Borehole. 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.
	EDS spectrum of the area between the larger dolomite crystals in the outer wall rock sample from EY56 site in the Western Borehole. A strong iron signal is observed. Not shown, but detected in the surrounding areas are barite crystals and gypsum particles. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.
	EDS spectrum of bright crystals the outer wall rock sample from EY56 site in the Western Borehole. A strong iron signal is observed. Samples are Au-Pd coated. Analysis by Spilde, Northup, and Boston.

Wall Rock

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