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Sacramento porphyry; note more coarsely crystalline texture and darker color: length of specimen 4 inches. Lake County, Colorado. 1935. Figure 36, in U.S.Geological Survey Professional paper 235. 1953.
Silver Plume (?) granite; note finely crystalline texture and faintly trachitoid arrangement of crystals with banding parallel to long dimension of specimen; length of specimen 3 inches. Lake County, Colorado. 1929. Figure 10, in U.S.Geological Survey Professional paper 235. 1953.
Specimen: Gradation in altered augite monzonite from (right) fresh rock to (center) sericitized and chloritized rock to (left) rock composed of coarsely crystalline epidote and albite, Jumbo mine, Prince of Wales Island, Alaska. 1944. Figure 33, in U.S.Geological Survey Professional paper 251. 1953.
This location is part of the Arizona Mineral Industry Location System (AzMILS), an inventory of mineral occurences, prospects and mine locations in Arizona. Yavapai325 is located in T8N R4W Sec 23 NW in the Sam Powell Peak - 7.5 Min quad. This collection consists of various reports, maps, records and related materials acquired by the Arizona Department of Mines and Mineral Resources regarding mining properties in Arizona. Information was obtained by various means, including the property owners, exploration companies, consultants, verbal interviews, field visits, newspapers and publications. Some sections may be redacted for copyright. Please see the access statement.
THIS IS A HISTORICAL RECORD. As of December 17, 2021, the BISON application will no longer be available online and has been replaced by https://www.gbif.us. The BISON APIs are still available at https://bison.usgs.gov/#api and the Integrated Publishing Toolkit is still available at https://bison.usgs.gov/ipt. The USGS Biodiversity Information Serving Our Nation (BISON) project is an online all-species mapping information system consisting of a large collection of species occurrence datasets (e.g., plants and animals) found in the United States, U.S. Territories, U.S. marine Exclusive Economic Zones (EEZ), and Canada, with relevant geospatial layers. Species occurrences are records of organisms at a particular...
Part of cross section of nodule-bed specimen. Specimen from locality pictured in photo no. tha00033. Many small nodules and fragments of fish teeth and bones make up groundmass of the larger nodules. The matrix is cemented with pyrite, much of which has altered to iron oxides and gypsum along bottom and top of bed. The light-colored streak at the left is ferruginous gypsum. Custer County, South Dakota. Circa 1967. Published as figure 5 in U.S. Geological Survey Professional Paper 594-L. 1968.
Categories: Image;
Tags: Custer County, South Dakota,
Photographers,
Specimens,
Tourtelot, H.A. Collection,
photo print
Iowa Gulch porphyry, showing flow banding in dense stony phase: length of specimen 4.5 inches. Lake County, Colorado. 1935. Figure 39, in U.S.Geological Survey Professional paper 235. 1953.
Opaline diatoms obtained from the digestion with acid; of part of the specimen shown in photo 26. San Luis Obispo County, California. 1931. Plate 11-B, in U.S.Geological Survey Professional paper 212. 1943.
Categories: Image;
Tags: Bramlette, M.N. Collection,
California Professional Paper 212,
Photographers,
Professional Papers,
Specimens,
Photograph of specimen of diorite-monzonite porphyry; partly replaced by syenite; diorite-monzonite porphyry; syenite. Ghosts of original feldspar phenocrysts can be seen in several places, especially in the indistinct "vein" of syenite that appears in large porphyry remnant at right; specimen from near La Plata River, opposite La Plata. La Plata County, Colorado. Circa 1936. Plate 8-B, in U.S.Geological Survey Professional paper 219. 1949.
Categories: Image;
Tags: Colorado Professional Paper 219,
Professional Papers,
Specimens,
photo print
Iowa Gulch porphyry, finely crystalline facies; dark spots are chiefly dendrites of manganese dioxide: length of specimen 3 inches. Lake County, Colorado. 1935. Figure 37, in U.S.Geological Survey Professional paper 235. 1953.
White porphyry, with vug formation; vugs bear small crystals of quartz and sercicite; length of specimen 3 inches. Lake County, Colorado. 1935. Figure 30, in U.S.Geological Survey Professional paper 235. 1953.
Specimen of etched crystal of galena from vug in Hayseed vein, near Central City, crystals were coated with film of ammonium chloride to avoid reflections in photographing it. Colorado. Circa 1911. Plate 17-A in U.S. Geological Survey. Professional paper 94. 1917.
Categories: Image;
Tags: Bastin, E.S. Collection,
Colorado Professional Paper 94,
Photographers,
Professional Papers,
Specimens,
A rock specimen of the upper surface of the nodule bed at locality pictured in photo no. 33. The upper surface of the matrix in which the nodules are embedded is made up of iron oxides resulting from the oxidation of underlying pyrite. Custer County. South Dakota. Circa 1967. Published as figure 4 in U.S. Geological Survey Professional Paper 594-L. 1968.
Categories: Image;
Tags: Custer County, South Dakota,
Photographers,
Specimens,
Tourtelot, H.A. Collection,
photo print
Shenandoah National Park, Virginia. Sawed slab of porphyritic greenstone. Slab is from the outcrop on the south side of Skyline Drive at mile 80.9, about 100 yards east of Big Run Overlook in the southern section of the park. Angular to slightly rounded phenocrysts of plagioclase (now albite) occur in the matrix of finer grained albite, chlorite, and epidote displaying relict basaltic fabric. The phenocrysts in this specimen are somewhat larger than those in the porphyritic flows in the Big Meadows-Stony Man Area, but the texture is typical. Specimen collected by Professor Ernst Cloos, The Johns Hopkins University. Photo by J.P. Owens. Figure 14, U.S. Geological Survey Bulletin 1265.
Categories: Image;
Tags: Photographers,
Reed, J.C. Collection,
Shenandoah National Park,
Specimens,
photo print
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