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Filters: Types: OGC WMS Service (X) > Tags: {"scheme":"http://www.sciencebase.gov/vocab/undefined/DenverHistoryPhotoLibrary/Categories","name":"photomicrographs"} (X) > partyWithName: U.S. Geological Survey (X)

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Radiating intergrowths of quartz (white) and ferruginous rhodochrosite (gray) with small patches of finely divided sulphides (black); photomicrograph (ordinary light) of this thin section of ore from 1000-foot level, Belmont vein. Nye County, Nevada. 1915. Plate 6- A in U.S. Geological Survey. Professional paper 104. 1918.
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Pyrite in matrix of nodule bed. At upper left is the border of relatively large nodule in bed. At lower left is an area clouded with iron oxides. Note small nodules in lower center. Elongated objects lower right are fragments of fish bone in matrix. Enlargement X 40. Smoothed surface photographed in green light. Custer County, South Dakota. circa 1967. (Photomicrograph) Published as figure 9 in U.S. Geological Survey Professional Paper 594-L. 1968.
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Album caption: Bentonite showing volcanic-ash structure. Shows several ringlike areas that represent unbroken glass bubbles, some of them, near the top, with the walls between adjacent bubbles still attached. Also near the top is a plate-like shard that shows perfect orientation of the crystalline clay material. At left center is a shard showing pumice structure. Just below it is a Y-shaped shard, the lower arm of which shows a double row of crystal plates with a dark dividing line. Otay, San Diego County, California. n.d. (Photomicrograph, crossed nicols, X75). (Photo by C.S. Ross). Published as Plate 4-A in U.S. Geological Survey. Professional paper 205-B. 1945.
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Photomicrographs of garnetiferous olivine corona, plane polarized light, garnet shows strong positive relief. Image from slide sample 3496, number 019. Photomicrograph by Glen A. Izett. Albany County, Wyoming. No date. Published in U.S. Geological Survey Miscellaneous Investigations Series I-2236, Figure K. 1998.
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Photomicrograph of metaconglomerate of the Weisner formation: with plain light, showing sharp outlines of pebbles. Bartow County, Georgia. Circa 1944. Plate 2-C, in U.S.Geological Survey Professional Paper 224. 1950.
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Quartz overgrowths on sandstone grains after clay formation, Nanushuk Group. Quartzose grains have overgrowths at points of low pressure (pore space) adjeacent to areas that were probably under high pressure (grain contacts). Overgrowths probably develop where clay coatings are absent. A polycrystalline quartz grain (upper left) has a pod of kaolinite growing on its surface. Sample 78ACh23, Kurupa anticline; magnification, 6.3 x 10, photomicrograph. Central North Slope, Alaska. Published as Figure 47A in U.S. Geological Survey Bulletin 1614. 1985.
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Photomicrograph of fine-grained quartzite of the Weisner formation: with plain light, showing a little Detrital zircon (z) and orthoclase (o). Bartow County, Georgia. Circa 1944. Plate 2-A, in U.S.Geological Survey Professional Paper 224. 1950.
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Photomicrograph of contact between oxidized and unoxidized portions of specimen shown as Bastin 289: In the unoxidized half as shown at the left, small pyrite crystals abound; in the oxidized half the iron occurs as finely divided oxide, though the spaces originally occupied by pyrite are still recognizable. Nye County, Nevada. 1915. Plate 15-A in U.S. Geological Survey. Professional paper 104. 1918.
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Bladed crystals of barite in a matrix of iron oxide and apatite. Enlargement X 40. Custer County, South Dakota. Circa 1968. (Photomicrograph) Left portion published as plate 2, figure 6 in U.S. Geological Survey Professional Paper 594-L. 1968.
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Photomicrographs of diabase dike cutting the southwestern end of the Dodge Creek peridotite. Partially crossed nicols; isotropic garnet is dark. Image from slide sample 3449, number 005. Photomicrograph by Glen A. Izett. Albany County, Wyoming. No date. Published in U.S. Geological Survey Miscellaneous Investigations Series I-2235, Figure C. 1997.
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Photomicrograph of metaconglomerate of the Weisner formation: with crossed nicols, showing typical interlocking texture of quartzite (above) and composite mineral character of some of the pebbles. Bartow County, Georgia. Circa 1944. Plate 2-D, in U.S.Geological Survey Professional Paper 224. 1950.
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Photomicrographs of garnetiferous olivine corona, crossed polarizers, garnet is dark. Image from slide sample 3314, number 030. Photomicrograph by Glen A. Izett. Albany County, Wyoming. No date. Published in U.S. Geological Survey Miscellaneous Investigations Series I-2236, Figure H. 1998.
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Photomicrographs of ungarnetiferous olivine coronas, crossed polarizers. Image from slide sample 3272, number 022. Photomicrograph by Glen A. Izett. Albany County, Wyoming. No date. Published in U.S. Geological Survey Miscellaneous Investigations Series I-2236, Figure D. 1998.
    map background search result map search result map Quartz overgrowths on sandstone grains after clay formation, Nanushuk Group. Central North Slope, Alaska. No date. Radiating intergrowths of quartz (white) and ferruginous rhodochrosite (gray) with small patches of finely divided sulphides (black); photomicrograph (ordinary light) of this thin section of ore from 1000-foot level, Belmont vein. Nye County, Nevada. 1915. Photomicrograph of contact between oxidized and unoxidized portions of specimen shown as Bastin 289. Nye County, Nevada. 1915. Photomicrograph of fine-grained quartzite of the Weisner formation. Bartow County, Georgia. Circa 1944. Photomicrograph of metaconglomerate of the Weisner formation: with plain light, showing sharp outlines of pebbles. Bartow County, Georgia. Circa 1944. Photomicrograph of metaconglomerate of the Weisner formation. Bartow County, Georgia. Circa 1944. Photomicrograph of Antietam quartzite from Strickler anticline; constituents are quartz and albite (white), muscovite (gray) and biotite (black); enlarged 15 X. Photomicrographs of diabase dike cutting the southwestern end of the Dodge Creek peridotite. Albany County, Wyoming. No date. Photomicrographs of garnetiferous olivine corona, plane polarized light. Albany County, Wyoming. No date. Photomicrographs of ungarnetiferous olivine coronas, crossed polarizers. Albany County, Wyoming. No date. Photomicrographs of garnetiferous olivine corona, crossed polarizers. Albany County, Wyoming. No date. Pyrite in matrix of nodule bed. Custer County, South Dakota. circa 1967. Bladed crystals of barite in a matrix of iron oxide and apatite. Custer County, South Dakota. Circa 1968. Photomicrograph of fine-grained quartzite of the Weisner formation. Bartow County, Georgia. Circa 1944. Photomicrograph of metaconglomerate of the Weisner formation: with plain light, showing sharp outlines of pebbles. Bartow County, Georgia. Circa 1944. Photomicrograph of metaconglomerate of the Weisner formation. Bartow County, Georgia. Circa 1944. Pyrite in matrix of nodule bed. Custer County, South Dakota. circa 1967. Bladed crystals of barite in a matrix of iron oxide and apatite. Custer County, South Dakota. Circa 1968. Photomicrograph of Antietam quartzite from Strickler anticline; constituents are quartz and albite (white), muscovite (gray) and biotite (black); enlarged 15 X. Photomicrographs of diabase dike cutting the southwestern end of the Dodge Creek peridotite. Albany County, Wyoming. No date. Photomicrographs of garnetiferous olivine corona, plane polarized light. Albany County, Wyoming. No date. Photomicrographs of ungarnetiferous olivine coronas, crossed polarizers. Albany County, Wyoming. No date. Photomicrographs of garnetiferous olivine corona, crossed polarizers. Albany County, Wyoming. No date. Radiating intergrowths of quartz (white) and ferruginous rhodochrosite (gray) with small patches of finely divided sulphides (black); photomicrograph (ordinary light) of this thin section of ore from 1000-foot level, Belmont vein. Nye County, Nevada. 1915. Photomicrograph of contact between oxidized and unoxidized portions of specimen shown as Bastin 289. Nye County, Nevada. 1915. Quartz overgrowths on sandstone grains after clay formation, Nanushuk Group. Central North Slope, Alaska. No date.