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SEM image of pink corrosion residue (sample SW9) from the FN Survey (FN18)
in the Southwestern Branch on the way to Big Sky camp. EDS analysis
reveals that the background is Al,O and that the grains are Mg,Ca, O
(dolomite?). Photo by Spilde, Northup, and Boston.
SEM image of pink corrosion residue (sample SW9) from the FN Survey (FN18)
in the Southwestern Branch on the way to Big Sky camp. Image shows a
pitted area with some iron specks on top. Photo by Spilde, Northup, and
Boston.