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Filters: Tags: Lovering, T.S. Collection (X) > Date Range: {"choice":"year"} (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: 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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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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Panoramas looking south from the south end of Teller Mountain near the Cashier Mine; glacial trenching of the Flattop peneplain is well shown. Summit County, Colorado. Circa 1927. Plate 8-B, U.S. Geological Survey, Professional paper 178. 1935.
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Aerial view looking north along the foothills from an altitude of 7,100 feet half a mile south of Morrison, shows the common topographic expression of the post Mississippian sedimentary formations and some of the younger erosion surfaces. Colorado. Circa 1932. Figure 6 with sketch, in U.S.Geological Survey Professional paper 223. 1950.
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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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Typical coarse grained Pikes Peak granite on the summit of Bison Peak [Bison Mountain]. The rapid weathering of the granite along joints is shown in this view. This weathering gives rise to residual and balanced boulders characteristic of the areas where the Pikes Peak granite has been long exposed to mechanical and chemical weathering. Mans figure near base of upper cliff at right gives the scale. Park County, Colorado. Pre- 1950. Figure 9-D in U.S.Geological Survey Professional paper 223. 1950
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Northwestward across Nederland, showing erosion surfaces; the Flattop, Cheyenne Mountain and Overland Mountain surfaces can be seen. Boulder County, Colorado. 1930. Figure 21, in U.S. Geological Survey. Professional paper 245. 1953.
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Idaho Springs formation on east side of Grays Peak; shows sill like seams of aplite and pegmatite parallel to the nearly horizontal schistosity and cross-breaking branch seams. Clear Creek County, Colorado 1930. Plate 6-A, U.S. Geological Survey, Professional paper 178. 1935. Figure 7-B, U.S. Geological Survey, Professional paper 223, 1950.
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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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Aerial view looking southwest across Overland Mountain toward James Peak from an altitude of 9,300 feet near Jamestown; shows type locality of the Overland Mountain erosion surface and the transition belt were it merges with the higher erosion surfaces near the crest of the range. The dumps in the left middle ground are those of the John Jay mine. Colorado. Circa 1932. Figure 2 with sketch, in U.S.Geological Survey Professional paper 223. 1950.
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Oblique aerial view looking southward toward Loveland Pass; showing Revenue Mountain on the extreme left to Keystone Mountain on the extreme right. Clear Creek and Summit Counties, Colorado. circa 1933. Plate 2-A, with sketch, in U.S. Geological Survey. Professional paper 178. 1935.
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Aerial view looking south-southwest across Allens Park from an altitude of 14,800 feet about 5 miles east of Longs Peak. The rugged topography characteristic of the Continental Divide is shown in the background and the transition from the high glaciated country near the middle of the range to the bench like erosion surfaces that border it is shown in the foreground. This transition zone almost coincides with the lower limit of glaciation. Colorado. Circa 1932. Figure 3 with sketch, in U.S.Geological Survey Professional paper 223. 1950.
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Typical exposure of Swandye hornblende gneiss near head of St. Johns Gulch, the gneissic structure of the dark gray hornblende gneiss is accentuated by the parallel and crosscutting light gray seams of pegmatite and aplite. The dip of the formation is nearly horizontal at this outcrop, which is near the crest of an anticline. Summit County, Colorado. circa 1927. Plate 7-A, U.S. Geological Survey, Professional paper 178. 1935.
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Klippe of Pre-Cambrian granite resting on Cretaceous shale, 5 miles north of Kremmling, the crystalline rocks are marked by wooded slopes and stand in contrast to the sage cover shale beneath. This is a part of the Williams Range underthrust. Grand County, Colorado. Circa 1926. Figure 11-C in U.S.Geological Survey Professional paper 223. 1950.
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Album caption: View looking W. and N.W. toward Boulder from a point approximately 4 miles S. of Lafayette on the main Denver...Boulder concrete highway. Shows prominent benching at the sides of the valley of Boulder Creek where it leaves the mountains. The benching is due to the development of Flagstaff Hill, Mt. Morrison and lower surfaces. (See T.S. Lovering photo number 644, lts000644).
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Album caption: Louis D. vein, Wellington mine. Breckenridge district, Summit County, Colorado. ca. 1926. Handwritten note on album caption: Published as figure 23-D in USGS Professional Paper 223 (1950).
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Album caption: View looking W. and N.W. toward Boulder from a point approximately 4 miles S. of Lafayette on the main Denver...Boulder concrete highway. Shows prominent benching at the sides of the valley of Boulder Creek where it leaves the mountains. The benching is due to the development of Flagstaff Hill, Mt. Morrison and lower surfaces. (See T.S. Lovering photo number 645, lts000645).
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Characteristic appearance of productive part of an average size tungsten vein, looking directly up at Cold Spring vein in roof of stope on 1930 ore shoot 100 feet level 4, west of Old shaft. sg, Sericitized granite; qg, silicified and sericitized fragments of granite; f, intergrown ferberite and horn quartz. Boulder County, Colorado. Pre-1950. Figure 23-C, in U.S.Geological Survey Professional paper 223. 1950. Figure 52, in U.S.Geological Survey Professional paper 245. 1953.
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. Louis D. vein, Wellington mind. Summit County, Colorado. 1926. A barren portion of the Tungsten vein in the Tungsten (Chance) mine. Boulder County, Colorado. 1930. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 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. View looking west and northwest toward Boulder, Boulder County, Colorado. Circa 1940s. View looking west and northwest toward Boulder, Boulder County, Colorado. Circa 1940s. A barren portion of the Tungsten vein in the Tungsten (Chance) mine. Boulder County, Colorado. 1930. View looking west and northwest toward Boulder, Boulder County, Colorado. Circa 1940s. View looking west and northwest toward Boulder, Boulder County, Colorado. Circa 1940s. Louis D. vein, Wellington mind. Summit County, Colorado. 1926. Aerial view looking north at Cheyenne Mountain from an altitude of 10,000 feet above Lytle. El Paso County, Colorado. Circa 1932. Copper-lead-zinc ore from Stevens mine. Summit County, Colorado. 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.