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Isidore Adler, chemist, operates a gonimeter used for x-ray fluorescence analysis of individual grains of mineral specimens, Geologic Division,Washington, D.C. 1958. Isidore Adler, chemist, operates a gonimeter used for x-ray fluorescence analysis of individual grains of mineral specimens, Geologic Division, U.S. Geological Survey, Washington, D.C. 1958. Lower right photograph page 36, Images of the U.S. Geological Survey, 1879-1979. Categories: Image; Tags: Patterson, E.F. Collection, Photographers, Specimens, Washington DC Images, photo print Early stage: blue-gray limestone or dolomite is somewhat fractured, cracks being filled with white dolomite; specimen is 3 inches long. Lake County, Colorado. 1929. Early stage: blue-gray limestone or dolomite is somewhat fractured, cracks being filled with white dolomite; specimen is 3 inches long. Lake County, Colorado. 1929. Figure 21, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Specimens of sheet mica. Latah County, Idaho. Circa 1943. Plate 8-B in U.S. Geological Survey. Specimens of sheet mica. Latah County, Idaho. Circa 1943. Plate 8-B in U.S. Geological Survey. Professional paper 229. 1950 Categories: Image; Tags: Idaho Professional Paper 229, Professional Papers, Specimens, photo print Sacramento porphyry; note more coarsely crystalline texture and darker color: length of specimen 4 inches. Lake County, Colorado. 1935. Sacramento porphyry; note more coarsely crystalline texture and darker color: length of specimen 4 inches. Lake County, Colorado. 1935. Figure 36, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Silver Plume (?) granite; note finely crystalline texture and faintly trachitoid arrangement of crystals with banding parallel to long dimension of specimen; length of specimen 3 inches. Lake County, Colorado. 1929. Silver Plume (?) granite; note finely crystalline texture and faintly trachitoid arrangement of crystals with banding parallel to long dimension of specimen; length of specimen 3 inches. Lake County, Colorado. 1929. Figure 10, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Specimen: Gradation in altered augite monzonite from (right) fresh rock to (center) sericitized and chloritized rock to (left) rock composed of coarsely crystalline epidote and albite, Jumbo mine, Prince of Wales Island, Alaska. Specimen: Gradation in altered augite monzonite from (right) fresh rock to (center) sericitized and chloritized rock to (left) rock composed of coarsely crystalline epidote and albite, Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 33, in U.S.Geological Survey Professional paper 251. 1953. Categories: Image; Tags: Specimens, photo print Johnson Gulch porphyry; note euhedral phenocrysts resembling those of Lincoln porphyry: length of specimen 3.5 inches. Lake County, Colorado. 1935. Johnson Gulch porphyry; note euhedral phenocrysts resembling those of Lincoln porphyry: length of specimen 3.5 inches. Lake County, Colorado. 1935. Figure 40, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Cambrian diabase-porphyry dike specimens. Arbuckle Mountains. Oklahoma. 1954. Cambrian diabase-porphyry dike specimens. Arbuckle Mountains. Oklahoma. September 1954. Categories: Image; Tags: Hamilton, W.B. Collection, Photographers, Specimens, color transparency (slides) Specimen of refolded isoclinal folds in schist. Riverside Mountains, Riverside County, California.1967. Specimen of refolded isoclinal folds in schist. Riverside Mountains, Riverside County, California. January 1967. Categories: Image; Tags: Hamilton, W.B. Collection, Photographers, Specimens, color transparency (slides) Specimen: Folded and sheared quartz vein. Alaska. 1907. Plate 9-A in U.S. Geological Survey. Bulletin 433. 1910. Specimen: Folded and sheared quartz vein. Alaska. 1907. Plate 9-A in U.S. Geological Survey. Bulletin 433. 1910. Categories: Image; Tags: Alaska Bulletin 433, Specimens, photo print Pikes Peak (?) granite; note coarsely crystalline texture and conspicuous dark mineral; length of specimen, 3 inches long. Lake County, Colorado. 1929. Pikes Peak (?) granite; note coarsely crystalline texture and conspicuous dark mineral; length of specimen, 3 inches long. Lake County, Colorado. 1929. Figure 8, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Diplomystus, a late-early Eocene herring from the Green River Formation 9 miles west of Kemmerer. Lincoln County, Wyoming. 1984. Diplomystus, a late-early Eocene herring from the Green River Formation 9 miles west of Kemmerer. About 1/2 natural size. Dorsal scutes partly separated from body. Worm-like objects are fish coprolites containing fragments of fish bones. Specimen prepared by W. R. Hansen. Lincoln County, Wyoming. July 1984. Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hansen, W.R. Collection, Lincoln County, Wyoming, Photographers, Specimens, color photo print Advanced stage: limestone almost wholly replaced and dark blotches also no longer conspicuous; specimen is 3 inches in length. Lake County, Colorado. 1929. Advanced stage: limestone almost wholly replaced and dark blotches also no longer conspicuous; specimen is 3 inches in length. Lake County, Colorado. 1929. Figure 23, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Specimen: Magnetite-diopside intergrowths replacing marble, upper magnetite bodies, Jumbo Basin, Prince of Wales Island, Alaska. Specimen: Magnetite-diopside intergrowths replacing marble, upper magnetite bodies, Jumbo Basin, Prince of Wales Island, Alaska. 1944. Figure 23, in U.S.Geological Survey Professional paper 251. 1953. Categories: Image; Tags: Specimens, photo print Stromatolite specimen from Helena Dolomite. Sun River Canyon project. Montana. 1965. Stromatolite specimen from Helena Dolomite. Sun River Canyon project. Montana. 1965. Categories: Image; Tags: Mudge M.R. Collection, Specimens, color transparency (slides) Kachemak Bay. Specimens of petrified wood. Cook Inlet. Seldovia District. Alaska. Circa 1904. Kachemak Bay. Specimens of petrified wood. Cook Inlet. Seldovia District. Alaska. Circa 1904. Published in U.S. Geological Survey Bulletin 277, Plate XV-A. 1906. Categories: Image; Tags: Alaska Images, Specimens, photo print Specimen: slight scour at top of diatomaceous upper layer of a rhythmite. Los Angeles County, California. 1931. Specimen: slight scour at top of diatomaceous upper layer of a rhythmite. Los Angeles County, California. 1931. Plate 15-C, in U.S.Geological Survey Professional paper 212. 1943. Categories: Image; Tags: Bramlette, M.N. Collection, California Professional Paper 212, Photographers, Professional Papers, Specimens, All tags... photo print, Fewer tags Specimens of granite. Fine granite, rhyolite, porphyry rhyolite. Precambrian, St. Francis Mountains. 1965. Specimens of granite. Fine granite, rhyolite, porphyry rhyolite. Precambrian, St. Francis Mountains. Missouri. April 1965. Categories: Image; Tags: Hamilton, W.B. Collection, Photographers, Specimens, color transparency (slides) Iowa Gulch porphyry, showing flow banding in dense stony phase: length of specimen 4.5 inches. Lake County, Colorado. 1935. Iowa Gulch porphyry, showing flow banding in dense stony phase: length of specimen 4.5 inches. Lake County, Colorado. 1935. Figure 39, in U.S.Geological Survey Professional paper 235. 1953. Categories: Image; Tags: Behre, C.H. Collection, Photographers, Specimens, photo print Part of cross section of nodule-bed specimen. Custer County, South Dakota. Circa 1967. Part of cross section of nodule-bed specimen. Specimen from locality pictured in photo no. tha00033. Many small nodules and fragments of fish teeth and bones make up groundmass of the larger nodules. The matrix is cemented with pyrite, much of which has altered to iron oxides and gypsum along bottom and top of bed. The light-colored streak at the left is ferruginous gypsum. Custer County, South Dakota. Circa 1967. Published as figure 5 in U.S. Geological Survey Professional Paper 594-L. 1968. Categories: Image; Tags: Custer County, South Dakota, Photographers, Specimens, Tourtelot, H.A. Collection, photo print 1 2 3 »