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SEM image of rock sample from red-colored rock wall in an area of
heavy corrosion residue in the EA survey. Note the "starfish" shaped
objects and see the two subsequent images for closer views.
The bright object that slightly resembles a sickle in this and the next
image, show calcium and iron peaks on EDS analysis.
Photo by Spilde, Northup, and Boston.
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SEM image (10,000x) of rock sample from red-colored rock wall in an area of
heavy corrosion residue in the EA survey. The numerous "starfish" shaped
objects resemble putative bacteria (Figure 26a, 26b) in a paper by Feldmann,
et al. 1997. Fungal quartz weathering and iron crystallite formation in an
Alpine environment, Piz Alv, Switzerland. Eclogae Geol. Helv. 90: 541-556.
Photo by Spilde, Northup, and Boston.
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SEM image (45,000x) close-up of the starfish-shaped objects in the
preceding image. These objects resemble putative bacteria (Figure 26a, 26b)
in a paper by Feldmann, et al. 1997. Fungal quartz weathering and iron
crystallite formation in an Alpine environment, Piz Alv, Switzerland.
Eclogae Geol. Helv. 90: 541-556.
Photo by Spilde, Northup, and Boston.
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EDS spectrum of the "starfish" objects. Analysis by Spilde, Northup,
and Boston.
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