Scanning electron microscope photograph of a bladed crystal of hydrous calcium sulfate. Skamania County, Washington. 1980.
Dates
Date Taken
1980
Summary
Album caption: Scanning electron microscope (SEM) photograph of a bladed crystal of hydrous calcium sulfate containing minor amounts of Fe and Al forming from botryoidal yellow noncrystalline material shown in photo no. 42 (msh_1250_00042) (sample MSH 7-1-80-6B). Skamania County, Washington. July 1, 1980. Published as figure 143 in U.S. Geological Survey. Professional paper 1250. 1981. Handwritten notes on album caption: (Photo by T. Keith) Index card unavailable.
Summary
Album caption: Scanning electron microscope (SEM) photograph of a bladed crystal of hydrous calcium sulfate containing minor amounts of Fe and Al forming from botryoidal yellow noncrystalline material shown in photo no. 42 (msh_1250_00042) (sample MSH 7-1-80-6B). Skamania County, Washington. July 1, 1980. Published as figure 143 in U.S. Geological Survey. Professional paper 1250. 1981.
Handwritten notes on album caption: (Photo by T. Keith)
Available in the U.S. Geological Survey Denver Library Photographic Collection, Mount St. Helens Collection.
Rights
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