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Filters: Types: OGC WMS Layer (X) > partyWithName: Lovering, Thomas Seward (X)

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Album caption and index card: Ore from Shaffer vein, Freeland mine, McClelland tunnel level, 35 feet east of Shaffer raise, 1,325 feet below surface. Ankerite (a) and pyrite (p) broken and cemented by dark fine-grained quartz (q) sphalerite (s) seamed by tetrahedrite (t) which is closely associated with dark quartz (q). Summit County, Colorado. Notes: Published as figure LX-F in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Unmineralized part of tungsten vein 200 feet west of large ore shoot, 100-foot level of Tungsten Vein mine. Note interior faulting and drag in barren sheeted zone (sz), showing the hanging wall (hw) has dropped. Boulder County, Colorado. Notes: Published as figure XXII in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of intrusion breccia of group 11 from Logan mine, 5 miles west of Boulder. Highly fragmented granite and some porphyry and early vein material lie in a biotite-flecked glassy groundmass that is partly silicified and sericitized. b, Fragment of biotite latite; g, glassy groundmass. Crossed nicols. Boulder County, Colorado. Notes: Published as figure XVII-A in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of gold-tungsten ore from Keklonga mine, Magnolia district. Sylvanite (s) in vuggy quartz (q3) which contains a little pyrite (py). Quartz (q3) and ferberite (fe) cut in early quartz. Boulder County, Colorado. Notes: Published as figure LXXIV-B in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of quartz-biotite schist from Idaho Springs formation at Nederland. Original bedding (nearly vertical in photograph) is intersected by shear planes sloping down to right at about 45°, and these shears are cut by later shears sloping to the left at 60°. b, Biotite; g, garnet; m, magnetite; q, quartz; fqb, crushed feldspar, quartz, and biotite. Plain light. Boulder County, Colorado. Notes: Published as figure VII-C in U.S.Geological Survey. Professional Paper 223. 1950.
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Aerial view looking north at Cheyenne Mountain from an altitude of 10,000 feet above Lytle, Cheyenne Mountain, type locality of the Cheyenne Mountain erosion surface, is a mass of Pre-Cambrian rock that has been thrust eastward onto Cretaceous strata at the south end of the Ute Pass fault. The fault line is marked by the abrupt termination of the foothills. El Paso County, Colorado. Circa 1932. Figure 16, with sketch, in U.S.Geological Survey Professional paper 223. 1950.
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Album caption and index card: Looking east at the Maxwell breccia reef near the junction of Fourmile Creek and North Boulder Creek. At this exposure the reef consists of brecciated Boulder Creek granite, moderately silicified and stained with hematite. The breccia reef has been mapped previously as pegmatite dike cutting the granite. Boulder County, Colorado. Notes: Published as figure XX-A in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption: Main vein of Wellington mine, Oro third level, cut by flat fault dipping south (see mine notebook): vein follows intrusive contact of porphyry; shale above porphyry and vein to right; jasper (?) to left. Breckenridge district, Summit County, Colorado. ca. 1926.
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Album caption: Looking N.W. from Stat. C. of the D.M.W.W. shows northeastward dipping Pierre Shale in the right middle distance and the anticlinal structure due to the Dakota Sandstone which has been cut through by the Snake River in left middle distance. Summit County, Colorado. No index card available. Notes: Published as plate VII-B in U.S. Geological Survey. Professional Paper 178. 1935.
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Album caption and index card: Photomicrograph of gold-tungsten ore from west end of 280-foot level of Keklonga mine, Magnolia district. Sylvanite (s) in crustified quartz (q₁ and q₂) associated with early coarse-grained ferberite. Fine-grained ferberite with a little quartz lies on the earlier quartz and is in turn incrusted and veined by late quartz (q3) containing some ferberite of three generations (f1, f2, and f3). py, Pyrite. Boulder County, Colorado. Notes: Published as figure LXXIV-A in U.S.Geological Survey. Professional Paper 223. 1950.
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Aerial view looking northeast across Berthoud Pass, from an altitude of 16, 200 feet, the position of the Berthoud Pass fault, which is responsible for the heavy ground in the Moffat tunnel 6 miles to the north is shown. Two cirques of Wisconsin age, which are cut into the Flattop peneplain at an altitude of slightly more than 12,000 feet, appear in the foreground and middle distance. Grand County, Colorado. Circa 1932. Figure 15, with sketch, in U.S.Geological Survey Professional paper 223. 1950.
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Panorama looking east up: the Snake River from the conical shale hill 1 mile west of the Montezuma quadrangle. Calcareous layers in the Pierre shale form the bluffs on the north side of the river; the low hill in the right middle distance is part of the terminal moraine west of Keystone. The outwash gravel makes the plain in the foreground and the middle distance from the Wisconsin glacier. Summit County, Colorado. circa 1928, Plate 8-A, U.S. Geological Survey, Professional paper 178. 1935
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Album caption and index card: Photomicrograph of copper-lead-zinc ore from Stevens mine, Argentine district. Chalcopyrite (cp) replaces sphalerite (s) and both are replaced by galena (g). q, Quartz. Summit County, Colorado. Notes: Published as figure LX-B in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of porphyritic granodiorite typical of rocks of group 4 from stock half a mile south of Jamestown. The primary alinement of feldspars responsible for the platy structure of the intrusive is clearly shown. i, Ilmenite; h, hornblende; p, plagioclase (andesine); q, quartz; t, titanite. Crossed nicols. Boulder County, Colorado. Notes: Published as figure XIII-A, in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph showing part of area on photograph 725. Ore and fragments of sericitized schist in fine-grained vuggy quartz. Explanation of symbols is the same as photograph 725. [opal (ov); b, barite; cq, chalcedonic quartz; g, gold; p, petzite; s, sylvanite] Crossed nicols and oblique illumination combined. Summit County, Colorado. Notes: Published as figure LX-D in U.S.Geological Survey Professional paper 223. 1950.
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Album caption and index card: Typical Swandyke hornblende gneiss. Shows strike and dip of the foliation and pitch of the linear structure in the plane of foliation. The handle of the hammer indicates the linear structure pitching to the right about 60°. Headwaters of the North Fork of Swan River 2 miles southwest of Montezuma. Summit County, Colorado. Notes: Published as figure VIII-A in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of diabase from dike on Hager Mountain northwest of Loveland Pass, representative of the diabase dike rocks of group 2. a. Augite; i, iron ore (ilmenite); p, plagioclase (labradorite). Polarized light. Boulder County, Colorado. Notes: Published as figure X-E in U.S.Geological Survey. Professional Paper 223. 1950.
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Album caption and index card: Photomicrograph of porphyritic hornblende diorite of group 4 from Swan River 2 miles south of Tiger [extinct mining town], showing reaction series. Core of augite (a) bordered by hornblende (h) which in turn is completely rimmed by biotite (b). Cross nicols. Boulder County, Colorado. Notes: Published as figure X-F in U.S.Geological Survey. Professional Paper 223. 1950.
map background search result map search result map Aerial view looking north at Cheyenne Mountain from an altitude of 10,000 feet above Lytle. El Paso County, Colorado. Circa 1932. Wellington mine. French Creek just beyond the mine. Breckenridge district. Summit County, Colorado. 1926. Main vein of Wellington mine. Summit County, Colorado. 1926. Aerial view looking northeast across Berthoud Pass. Grand County, Colorado. 1932. Panorama looking east up: the Snake River. Summit County, Colorado. 1928. A barren portion of the Tungsten vein in the Tungsten (Chance) mine. Boulder County, Colorado. 1930. View from Station C, showing dipping Pierre Shale. Summit County, Colorado. circa 1932. Photomicrograph of quartz-biotite schist from Idaho Springs formation at Nederland. Boulder County, Colorado. circa 1932. Typical Swandyke hornblende gneiss. Summit County, Colorado. circa 1932. Photomicrograph of diabase from dike on Hager Mountain, northwest of Loveland Pass. Boulder County, Colorado. circa 1932. Photomicrograph of porphyritic hornblende diorite taken from Swan River. Boulder County, Colorado. circa 1932. Photomicrograph of porphyritic granodiorite. Boulder County, Colorado. circa 1932. Photomicrograph of intrusion breccia, west of Boulder. Boulder County, Colorado. circa 1932. Looking east at the Maxwell breccia reef near the junction of Fourmile and North Boulder Creeks. Boulder County, Colorado. circa 1932. Unmineralized tungsten vein. Boulder County, Colorado. circa 1932. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 1932. Photomicrograph showing ore and fragments of sericitized schist in fine-grained vuggy quartz. Summit County, Colorado. circa 1932. Ore from Shaffer vein, Freeland mine. Summit County, Colorado. 1932. Gold-tungsten ore from west end of 280-foot level of Keklonga mine. Boulder County, Colorado. 1932. Photomicrograph of gold-tungsten ore from Keklonga mine. Boulder County, Colorado. 1932. A barren portion of the Tungsten vein in the Tungsten (Chance) mine. Boulder County, Colorado. 1930. Wellington mine. French Creek just beyond the mine. Breckenridge district. Summit County, Colorado. 1926. Main vein of Wellington mine. Summit County, Colorado. 1926. Panorama looking east up: the Snake River. Summit County, Colorado. 1928. Aerial view looking north at Cheyenne Mountain from an altitude of 10,000 feet above Lytle. El Paso County, Colorado. Circa 1932. Aerial view looking northeast across Berthoud Pass. Grand County, Colorado. 1932. View from Station C, showing dipping Pierre Shale. Summit County, Colorado. circa 1932. Photomicrograph of quartz-biotite schist from Idaho Springs formation at Nederland. Boulder County, Colorado. circa 1932. Typical Swandyke hornblende gneiss. Summit County, Colorado. circa 1932. Photomicrograph of diabase from dike on Hager Mountain, northwest of Loveland Pass. Boulder County, Colorado. circa 1932. Photomicrograph of porphyritic hornblende diorite taken from Swan River. Boulder County, Colorado. circa 1932. Photomicrograph of porphyritic granodiorite. Boulder County, Colorado. circa 1932. Photomicrograph of intrusion breccia, west of Boulder. Boulder County, Colorado. circa 1932. Looking east at the Maxwell breccia reef near the junction of Fourmile and North Boulder Creeks. Boulder County, Colorado. circa 1932. Unmineralized tungsten vein. Boulder County, Colorado. circa 1932. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 1932. Photomicrograph showing ore and fragments of sericitized schist in fine-grained vuggy quartz. Summit County, Colorado. circa 1932. Ore from Shaffer vein, Freeland mine. Summit County, Colorado. 1932. Gold-tungsten ore from west end of 280-foot level of Keklonga mine. Boulder County, Colorado. 1932. Photomicrograph of gold-tungsten ore from Keklonga mine. Boulder County, Colorado. 1932.