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Album caption:Two modes of occurrence of secondary anatase. (From 990.5 feet below top of core). Disseminated grains. Routt County, Colorado. 1972.(Photomicrograph) Published as figure 8-B in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: Bleached porphyry of Hahns Peak. Dark quartz andesite porphyry dike rock. Routt County, Colorado. 1972. (Specimen) Published as figure 6 in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: Silver-bearing tetrahedrite (tetrahedrons) and quartz crystals in small cavity (271.5 feet below top of core). Routt County, Colorado. 1972. Published as figure 9 in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: Breccia texture fading out into more massive jas-peroid. Lake Valley mining district, Sierra County, New Mexico. 1962.
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Album caption: Gray and red jasperoid. Lake Valley mining district, Sierra County, New Mexico. April 1962.
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Album caption:Milky-white fragments of jasperoid in a dark red-dish-black hematite matrix. Lake Valley mining district, Sierra County, New Mexico. April 1962. Published as figure 5_B in U. S. Geological Survey. Bulletin 1222_D. 1966.
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Album caption:Blocky chert in Alamogordo member of Lake Valley formation. Lake Valley mining district, Sierra County, New Mexico. April 1962.
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Album caption:Two modes of occurrence of secondary anatase. (From 990.5 feet below top of core). In microvugs. Routt County, Colorado. 1972. (Photomicrograph) Published as figure 8-A in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: Typical pink zircon crystal occurring as accessory mineral (671 feet below top of core).Routt County, Colorado. 1972. (Photomicrograph) Published as figure 5 in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: DM-A, select group of fluorapatite from Cerro de Mercado, Durango, used for chemical, spectrographic, and physical analyses. The group constitutes 23.5 g. of crystals chesen for their purity from more than 500 g. Durango, Mexico. ca. 1968. (Specimen) Published as figure 1, p. 85, in U. S> Geological Survey. Professional paper 650-D. 1969.
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Album caption: Pale-green botryoidal crusts of variscite lining a cavity (426 feet below top of core).Routt County, Colorado. 1972. (Photomicrograph) Published as figure 11 in U. S Geological Survey. Bulletin 1367. 1973.
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Album caption:Contact zone between jasperoid and dolomite. Lake Valley mining district, Sierra County, New Mexico. April 1962.
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Album caption:Synclinal structure shown in foreground. Lake Valley mining district, Sierra County, New Mexico. April 1962.
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Album caption: Productive jasperoid body in Fusselman dolomite away from Berenda fault showing contact between jasperoid and dolomite in foreground; synclinal body of Lake Valley limestone containing mapped body of chert in middle distance. Lake Valley mining district, Sierra County, New Mexico. April 1962. Published as figure 6 in U. S. Geological Survey. Bulletin 1222-D. 1966.
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Album caption: Stralike platelet of pyrite (1,202 feet below top of core). Routt County, Colorado. 1972. (Photomicrograph) Published as figure 7 in U. S. Geological Survey. Bulletin 1367. 1973.
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Album caption: Uraninite-bearing biotite concentrations. Close up of biotite concentation . Light inclusions are quartz segregations. Largest dimension of magnet is 1 inch. Area of closeup is in center of lower left quarter of photo 30. Wheeler Basin. Grand County, Colorado. n.d. Published as figure 3-B, page 308, in U. S. Geological Survey. Journal of research, v. 3, no. 3. May-June, 1975.
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Album caption: Jasperoid body - looking northwest. Lake Valley mining district, Sierra County, New Mexico. April 1962. Published as figure 5-A in U. S. Geological Survey. Bulletin 1222-D. 1966.
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Album caption: Red jasper veins cutting massive milky-white gray jasper. Lake valley mining district, Sierra County, New Mexico. 1962.
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Album caption: Uraninite-bearing biotite concentrations. Note boulder of mixed gneiss and pegmatite in foreground, small pegmatite body on right and biotite concentrations in middle ground extending downhill to left. View is to the west. Wheeler Basin. Grand County, Colorado. n. d. Published as figure 3-A, page 308, in U. S. Geological Survey. Journal of research, V. 3. no. 3. May-June, 1975.


    map background search result map search result map Weathered surface of Fusselman dolomite. Lake Valley mining district, Sierra County, New Mexico. 1962. Breccia texture fading out into more massive jas-peroid. Lake Valley mining district, Sierra County, New Mexico. 1962. Red jasper veins cutting massive milky-white gray jasper. Lake valley mining district, Sierra County, New Mexico. 1962. Milky-white fragments of jasperoid in dark red-dish-black hematite matrix. Lake Valley mining district, Sierra County, New Mexico. 1962. Blocky chert in Alamogordo member of Lake Valley formation. Lake Valley mining district,  Sierra County, New Mexico. 1962. Synclinal structure shown in foreground, Lake Valley Mining District, Sierra County, New Mexico. 1962. Gray and red jasperoid. Lake Valley Mining District, Sierra County, New Mexico. 1962. Productive jasperoid Lake Valley Mining District, Sierra County, New Mexico. 1962. Contact zone between jasperoid and dolomite. Lake Valley Mining District, Sierra County, New Mexico. 1962. Jasperoid body - looking northwest. Lake Valley Mining District, Sierra County, New Mexico. 1962. DM-A, select group of fluorapatite from Cerro de Mercado, Durango, Mexico. ca. 1968. Typical pink zircon crystal occurring as accessory mineral (671 feet below top of core).Routt County, Colorado. 1972. Bleached porphyry of Hahns Peak. Routt County, Colorado. 1972. Stralike platelet of pyrite (1,202 feet below top of core). Routt County, Colorado. 1972. Two modes of occurrence of secondary anatase.  Routt County, Colorado. 1972. Two modes of occurrence of secondary anatase. Routt County, Colorado. 1972. Silver-bearing tetrahedrite (tetrahedrons) and quartz crystals in small cavity (271.5 feet below top of core). Routt County, Colorado. 1972. Pale-green botryoidal crusts of variscite lining a cavity. Routt County, Colorado. 1972. Uraninite-bearing biotite concentrations. Grand County, Colorado. n. d. Uraninite-bearing biotite concentrations. Grand County, Colorado. Uraninite-bearing biotite concentrations. Grand County, Colorado. n. d. Uraninite-bearing biotite concentrations. Grand County, Colorado. Typical pink zircon crystal occurring as accessory mineral (671 feet below top of core).Routt County, Colorado. 1972. Bleached porphyry of Hahns Peak. Routt County, Colorado. 1972. Stralike platelet of pyrite (1,202 feet below top of core). Routt County, Colorado. 1972. Two modes of occurrence of secondary anatase.  Routt County, Colorado. 1972. Two modes of occurrence of secondary anatase. Routt County, Colorado. 1972. Silver-bearing tetrahedrite (tetrahedrons) and quartz crystals in small cavity (271.5 feet below top of core). Routt County, Colorado. 1972. Pale-green botryoidal crusts of variscite lining a cavity. Routt County, Colorado. 1972. Weathered surface of Fusselman dolomite. Lake Valley mining district, Sierra County, New Mexico. 1962. Breccia texture fading out into more massive jas-peroid. Lake Valley mining district, Sierra County, New Mexico. 1962. Red jasper veins cutting massive milky-white gray jasper. Lake valley mining district, Sierra County, New Mexico. 1962. Milky-white fragments of jasperoid in dark red-dish-black hematite matrix. Lake Valley mining district, Sierra County, New Mexico. 1962. Blocky chert in Alamogordo member of Lake Valley formation. Lake Valley mining district,  Sierra County, New Mexico. 1962. Synclinal structure shown in foreground, Lake Valley Mining District, Sierra County, New Mexico. 1962. Gray and red jasperoid. Lake Valley Mining District, Sierra County, New Mexico. 1962. Productive jasperoid Lake Valley Mining District, Sierra County, New Mexico. 1962. Contact zone between jasperoid and dolomite. Lake Valley Mining District, Sierra County, New Mexico. 1962. Jasperoid body - looking northwest. Lake Valley Mining District, Sierra County, New Mexico. 1962. DM-A, select group of fluorapatite from Cerro de Mercado, Durango, Mexico. ca. 1968.