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Haplophragmoides Ammobaculites. Northern Alaska. n.d. Plate 11 in U.S.Geological Survey Professional Paper 236. 1955.
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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.
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Specimen: Folded and sheared quartz vein. Alaska. 1907. Plate 9-A in U.S. Geological Survey Bulletin 433. 1910.
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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.
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Marginulinopsis, marginulina, rectoglandulina and lingulina. Northern Alaska. n.d. Published as plate 44 in U.S.Geological Survey Professional Paper 236. 1962.
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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.
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Album caption: Mature loess-Kansan erosion topography. North fork of Skunk River, one mile northeast of Rhodes. Kansan drift area. Rhodes Township, Sec. 3 and 10, T. 82 N., R. 20 W. Marshall County, Iowa. July 1, 1914.
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Little Union quartz latite, showing inclusions: length of specimen 4.5 inches. Lake County, Colorado. 1935. Figure 38, in U.S.Geological Survey Professional Paper 235. 1953.
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Specimen storage and examination room. Chemical Laboratory. Washington DC. 1917.
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Polished faces of two specimens showing continuity of bedding laminae from diatomaceous to dense cherty rock; dark crack in lower specimen is due to accidental break. Santa Barbara County, California. 1931. Plate 16-C, in U.S.Geological Survey Professional Paper 212. 1943.
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Specimen: Bedding planes in marble, preserved by garnet. Jumbo Basin, Prince of Wales Island, Alaska. 1944. Figure 22, in U.S.Geological Survey Professional Paper 251. 1953.
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Lincoln porphyry showing orthoclase and quartz phenocrysts: length of specimen 3.5 inches. Lake County, Colorado. 1935. Figure 34, in U.S.Geological Survey Professional Paper 235. 1953.
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Specimen: Uralitized diopside crystal, partially replaced and surrounded by garnet. Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 25, in U.S.Geological Survey Professional Paper 251. 1953.
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Tree trunk at base of Black Rock beds near north end of T. 20 N., R. 100 W.; same as image 478. Size of tree determined by comparison with Smith's hat; center of picture suggests strongly dune action. Numerous less perfect specimens seen in this vicinity. Almond quadrangle, Wyoming. No date.
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Specimen: Rythmically zoned garnet, Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 27, in U.S.Geological Survey Professional Paper 251. 1953.
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Specimen: Porous garnet aggregate characteristic of schist replacement. Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 35, in U.S.Geological Survey Professional Paper 251. 1953.
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Specimen: Zoned garnet with grossularite-rich cores and andradite margins. Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 28, in U.S.Geological Survey Professional Paper 251. 1953.
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Zinc ore from 500-foot level, Pend Oreille mine; dark gray and black are sphalerite and jasperoid. This specimen contains more milky quartz (white) than most ore, natural size. Pend Oreille County, Washington. 1936. Plate 25-B, U.S.Geological Survey Professional Paper 202. 1943.


map background search result map search result map Mature loess-Kansan erosion topography. Marshall County, Iowa. 1914. Pikes Peak (?) granite; note coarsely crystalline texture and conspicuous dark mineral; length of specimen, 3 inches long.  Lake County, Colorado. 1929. Lincoln porphyry showing orthoclase and quartz phenocrysts: length of specimen 3.5 inches.  Lake County, Colorado. 1935. Little Union quartz latite, showing inclusions: length of specimen 4.5 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. Polished faces of two specimens showing continuity of bedding laminae from diatomaceous to dense cherty rock. Santa Barbara County, California. 1931. Specimen of refolded isoclinal folds in schist. Riverside Mountains, Riverside County, California.1967. Specimen storage and examination room. Washington, D.C. 1917. Specimen: Bedding planes in marble, preserved by garnet. Jumbo Basin, Prince of Wales Island, Alaska. 1944. Specimen: Magnetite-diopside intergrowths replacing marble, upper magnetite bodies, Jumbo Basin, Prince of Wales Island, Alaska. 1944. Specimen: Uralitized diopside crystal, partially replaced and surrounded by garnet. Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Rythmically zoned garnet, Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Zoned garnet with grossularite-rich cores and andradite margins. Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Porous garnet aggregate characteristic of schist replacement. Jumbo mine, Prince of Wales Island, Alaska. 1944. Stromatolite specimen from Helena Dolomite. Sun River Canyon project. Montana. 1965. Zinc ore from 500-foot level, Pend Oreille mine; dark gray and black are sphalerite and jasperoid. Pend Oreille County, Washington. 1936. Tree trunk at base of Black Rock. Wyoming. No date. Specimen: Folded and sheared quartz vein. Alaska. 1907. Haplophragmoides Ammobaculites. Northern Alaska. n.d. Marginulinopsis, marginulina, rectoglandulina and lingulina. Northern Alaska. n.d. Specimen storage and examination room. Washington, D.C. 1917. Mature loess-Kansan erosion topography. Marshall County, Iowa. 1914. Zinc ore from 500-foot level, Pend Oreille mine; dark gray and black are sphalerite and jasperoid. Pend Oreille County, Washington. 1936. Polished faces of two specimens showing continuity of bedding laminae from diatomaceous to dense cherty rock. Santa Barbara County, California. 1931. Specimen of refolded isoclinal folds in schist. Riverside Mountains, Riverside County, California.1967. Specimen: Bedding planes in marble, preserved by garnet. Jumbo Basin, Prince of Wales Island, Alaska. 1944. Specimen: Magnetite-diopside intergrowths replacing marble, upper magnetite bodies, Jumbo Basin, Prince of Wales Island, Alaska. 1944. Specimen: Uralitized diopside crystal, partially replaced and surrounded by garnet. Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Rythmically zoned garnet, Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Zoned garnet with grossularite-rich cores and andradite margins. Jumbo mine, Prince of Wales Island, Alaska. 1944. Specimen: Porous garnet aggregate characteristic of schist replacement. Jumbo mine, Prince of Wales Island, Alaska. 1944. Tree trunk at base of Black Rock. Wyoming. No date. Pikes Peak (?) granite; note coarsely crystalline texture and conspicuous dark mineral; length of specimen, 3 inches long.  Lake County, Colorado. 1929. Lincoln porphyry showing orthoclase and quartz phenocrysts: length of specimen 3.5 inches.  Lake County, Colorado. 1935. Little Union quartz latite, showing inclusions: length of specimen 4.5 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. Stromatolite specimen from Helena Dolomite. Sun River Canyon project. Montana. 1965. Specimen: Folded and sheared quartz vein. Alaska. 1907. Haplophragmoides Ammobaculites. Northern Alaska. n.d. Marginulinopsis, marginulina, rectoglandulina and lingulina. Northern Alaska. n.d.