 | | Journal (article/letter/editorial) | | Pegmatite in the Clear Creek District, CLEAR CREEK COUNTY, COLORADO In all of Colorado's Front Range only a few...TILANDER Chevron U.S.A., Inc. 700 South Colorado Boulevard Denver, Colorado 80201 pears to dip steeply to the...I-inch grain size) unit of plagioclase, quartz, and biotite. The wall zone is a medium-grained (1 to 4-inch... TOURMALINE PROSPECT, C L E A R C R E E K COUNTY, COLORADO CCea veCa n...prospect. 242 ROCKS AND MINERALS with quartz) and biotite are accessory minerals in the wall zone. The core |  | | Report (issue) | | Association: Quartz, sodic plagioclase, muscovite, biotite, \hornblende." Distribution: A widespread mineral...Tirol, Austria. At Baveno, Piedmont, Italy. In the USA, at Amelia, Amelia Co., Virginia; Haddam, Middlesex...and Magnet Cove, Hot Spring Co., Arkansas. In Colorado, in the Pikes Peak area, El Paso Co., Crystal...Co., with large crystals from the Devil's Hole beryl mine, Fremont Co.; in the Black Hills, Pennington |  | | Journal (article/letter/editorial) | | Park, Maryland. Hafi, John C., Colorado School of Mines, Golden, Colorado. Heyl, George R., U. S. Geological...of the series were lormed at Hobart Butte, Lane County, Oregon, probably in Miocene time by hydrothermal...engaged in this work, chiefly in South Dakota, Colorado, Wyoming, Idaho, New Mexico, the Southeastern...kodachrome of a giant beryl crystal at the Ingersoll Mine near Keystone will also be presented. BASTINITE...CONCRETIONS FROM PITTSBI'RGH COAI SEAM' MONONGALIA COUNTY, WEST VIRGINIA WII-DERD. FOSTERAND IIORENCE L. |  | | Journal (issue) | | 1988 FIELD TRIPS Page FOSS IL FISH REMAINS in DEVIL'S HOLE Ms Maggie Rowlands & Peter Tarrant 10 April... THE FIELD TRIPS FOSSIL FISH REMAINS IN THE DEVIL'S HOLE SECTION, NEAR MORVILLE, SHROPSHIRE Led by Ms...a small, very overgrown stream known as the Devil's Hole. Many fish fragments from the species shown...Council entitled: THE DEVIL'S HOLE SECTION, NEAR MORVILLE, SHROPSHIRE. "Devil's Hole section illustrats...Sandstone sequi:nce in the Welsh Borders. The Devil's Hole Stream (sometimes called the Lye Stream) runs |  | | Journal (article/letter/editorial) | | penetrat e along the cleavages. Small cr ystals of biotite are common; they a re of the usua l t ype found...black material. Beautifully fresh idiom orphic biotite is common; it has only a slight tendency to the...a definite tendency for them to associate with biotite, the prism edges being parallel to the cleavages...; they are preserved in silica and carbonate. Biotite also occurs in unusually large crystals almost...crystals is fairly abundant, sometimes enclosed in biotite. Scattered through the slide are numerous opaque |  | | Journal (issue) | | - - - - - - - - - - - Mineral Collections 1n Colorado A Supplement to The Mineralogical Record November-December..."Smithsonian packet," Smoky Hawk claim, Florissant, Colorado. Collected in 2008; Dorris Family collection;...certificates for mines in the Cripple Creek District, Colorado, in 1898 and 1901. Sponsorship: This special supplement...Collecting in Colorado The Collections: Mel & Pam Bersch Ryan Bowling Ralph Clark Colorado School of Mines...Thompson George Witters Martin Zinn III and Colorado in the :Mineralogical Record Supplement to The |  | | Book (edition) | | white acicular crystals about I mm long (12). Biotite 'Black' mica, a complex ferromagnesian silicate...occurs ubiquitously as a hydration product of biotite and other ferromagnesian minerals, and in small...the high level cave on the east side of the Devil's Hole and (before the quarry was submerged) at Les...hummocky surface of rock rich In hornblende and biotite. Throughout the dlorlte areas there occur diorlte... with tourmaline, in small pegmatite veins at Fremont Point (15). In the diorites it occurs In plates |  | | Book | | Features, 135 Special Interest Features, 141 6. 147 Colorado Desert Geography, 147 Stratigraphy, 151 Structure...Mountains, 191 Mountains of Central Ventura County, 196 Santa Monica Mountains and the Channel Islands...rock complex of the Basin Ranges, Mojave and Colorado Deserts Geomorphic province boundary Geologic...Cenozoic deposits like those in the Mojave and Colorado deserts. Restricted continental basins, including...Plateau, the Basin Ranges, the Mojave Desert, the Colorado Desert, the Peninsular Ranges, the Transverse |  | | Book | | lattice. Some minerals reveal pleochroic halos, e.g. biotite around inclusions of zircon. Other minerals change...Urals and Altai, USSR; Ajo and Bisbee, Arizona, USA; localities in Bolivia and Chile; the African 'Copper...'Copper Belt' in Zaire and Zambia; and in Bura-Bura Mine, Australia. Sedimentary copper is found in schists...on the southern shore of Lake Superior, Michigan, USA. Of a similar origin is copper found in Langban,... Sweden, and Franklin Furnace, New Jersey, USA. Copper is used extensively in metallurgy (in the manufacture | | | Book | | lattice. Some minerals reveal pleochroic halos, e.g. biotite around inclusions of zircon. Other minerals change...Urals and Altai, USSR; Ajo and Bisbee, Arizona, USA; localities in Bolivia and Chile; the African 'Copper...'Copper Belt' in Zaire and Zambia; and in Bura-Bura Mine, Australia. Sedimentary copper is found in schists...on the southern shore of Lake Superior, Michigan, USA. Of a similar origin is copper found in Langban,... Sweden, and Franklin Furnace, New Jersey, USA. Copper is used extensively in metallurgy (in the manufacture |  | | Report (issue) | | Reports Section federal Center, Box 25425 Denver, Colorado 80225 The use of trade names is for identification...Data Evaluation of Major and Trace Elements in Acid Mine Waters and Ground Waters .......... 131 PROJECT...include two mountain streams, several lakes in Colorado and Minnesota and a bog in Massachusetts; (4)...winter (under ice) phytoplankton in Loch Vale (Colorado Water Energy and Biogeochemical Budgets (WEBB)...Gulch, an acidic mountain stream near Leadville, Colorado Proceedings of the technical meeting, Denver, |  | | Report (issue) | | Central region __________________________109 Colorado ____________________________109 Kansas ______...Francisco Bay regional studies _ ___ ______284 Colorado Front Range Urban Corridor _____________284 Geotechnical...Geotechnical and geohydrological studies in Fairfax County, Virginia _____________________285 Puget Sound...------ Council on Environmental Quality CFRUC ββ__ Colorado Front Range Urban Corridor Project CGIS ------...include high-alumina clay, igneous-rock alunite, coal-mine waste and washings, shale, dawsonite, and aluminum |  | | Report (issue) | | Box 25425, Federal Center Building 810 Denver, Colorado 80225 CONTENTS PAGE Introduction 1 Ecology...variations in iron chemistry in an acidic stream in the Colorado Rocky Mountains, U.S.A: Arctic and Alpine Research...lakes in Loch Vale, Rocky Mountain National Park, Colorado--sensitivity to acidic conditions and nitrate...1989, Research on metals in acid mine drainage in the Leadville, Colorado, area, in Mallard, G.E., and Ragone...streamwater, St. Kevin Gulch, near Leadville, Colorado, in Mallard, G.E., and Ragone, S.E., eds., U.S |  | | Report (issue) | | ------Multistate studies ---------------------Colorado ------------------------------Kansas _______ ...Geotechnical and geohydrological studies in Fairfax County, Virginia _________ _ Connecticut Valley Urban...l cooperators ----------~-------------Β State, county, and local cooperators ---------Other cooperators...mineralization in the Creede mining district of Colorado M.A. Lanphere, P. M. Bethke, P. B. Barton, Jr...mineralization in the Creede mining district of Colorado. Potassium-argon measurements on vein adularia |  | | Report (issue) | | __________________ Arkansas ______________________ Colorado ______________________ Iowa βββββββββββββββββ______...exploratory drilling for ground water in Fairfax County, Virginia _____________ Geologic and hydrologic...local officials _____ββββββββββ Integrated surface mine reclamation and land use planning ________βββββββ_...ββ. Council on Environmental Quality CFRUC ____ Colorado Front Range Urban Corridor Project CGIS ------...that are not presently comΒ mercial are mainly in Colorado, Illinois, Nevada, New Mexico, Oregon, and Tennessee |  | | Report (issue) | | cover Hetch-Hetchy Water Supply The city and county of San Francisco at a total cost of about $105...assemblage. Muscovite is common, green or brown biotite is usually present, and hornblende and augite are...well developed in Arroyo Valle south to the Devil's Hole in sees. 3 and 10, T. 5 S., R. 3 E. Many of...glaucophane-muscovite schist, glaucophane-quartz-biotite schist, glaucophanequartz-epidote schist, glau...However, the hard blue shales in the lower part of the hole are believed to be correlative with some argillaceous |  | | Report (volume) | | Crossroads: Lyons, P. L., 4. Gilbert H., 10. Colorado, South Silverton area: Expanding horizons: Lay..., 11. D. J. Rocky Mtn. geosyncline in Canada: Colorado Plateau: Wengerd, Warren; P. S., 4. S. A., 6....described. Div. Mines, 1; Jenkins, O. P., Choctaw County, Highway 17 area: 3. Toulmin, L. D., Jr., 3. Minor:...analysis: KelH. D., 5. ler, W. D., 3. Talladega County, hematiteOklahoma, potash agstone, granite magnetite...ground water: Powham, C. E. ell, W. J., 4. Marengo County: Newton, J. G., 1. Core-drilling program, ChattanooMica: |  | | Report (issue) | | kJ/kg) on a Zinc and coal recoverable from coal mine refuse moisture-free basis for all samples with...studies of the Square Butte Wilderness Area, Choteau County, Montana Studies by M. D. Kleinkopf of the large...Geophysical studies in the Never Summer Wilderness Area, Colorado The geophysical data (gravity and magnetics)...studies in the Sierra Ancha Wilderness Area, Gila County, Arizona Preliminary gravity results show several...Sierra Ancha Wilderness Area and vicinity, Gila County, Arizona Plutonic rocks of the Ten Mile Creek |  | | Report (volume) | | kJ/kg) on a Zinc and coal recoverable from coal mine refuse moisture-free basis for all samples with...studies of the Square Butte Wilderness Area, Choteau County, Montana Studies by M. D. Kleinkopf of the large...Geophysical studies in the Never Summer Wilderness Area, Colorado The geophysical data (gravity and magnetics)...studies in the Sierra Ancha Wilderness Area, Gila County, Arizona Preliminary gravity results show several...Sierra Ancha Wilderness Area and vicinity, Gila County, Arizona Plutonic rocks of the Ten Mile Creek |  | | Report (issue) | | _____________________ Arkansas____________________________ Colorado ____________________________ Kansas__________..._________Council on Environmental Quality CFRUC ..Colorado Front Range Urban Corridor Project CGIS _____Canada...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...studies in the Powderhorn Wilderness Study Area, Colorado R. A. Martin reported that magnetic flows of...generally similar to the greenstone belt at Pecos mine, but there is no evidence of nearby felsic eruptive |  | | Report (volume) | | _____________________ Arkansas____________________________ Colorado ____________________________ Kansas__________..._________Council on Environmental Quality CFRUC ..Colorado Front Range Urban Corridor Project CGIS _____Canada...Wilderness Area in the Blue Ridge Mountains of Haywood County, N.C., contains complexly folded, high-grade metamorphic...studies in the Powderhorn Wilderness Study Area, Colorado R. A. Martin reported that magnetic flows of...generally similar to the greenstone belt at Pecos mine, but there is no evidence of nearby felsic eruptive |  | | Report (volume) | | Bull. 1060-D, p. 193, 252-253, pl. 7. In Nemaha County, Kans., member is basal unit of Howard limestone...Aarde farm, sec. 4, T. 26 S., R. 11 E., Greenwood County. Aaron Slatet Precambrian or Paleozoic: Central...Central Railroad, sees. 5-7, T. 11 S., R. 5 E., Pope County. Named for Abbott Station. Abbyville Gabbrol Precambrian...map. Occurs in vicinity of Abbyville, Mecklenburg County. Abercrombie Formationl Middle Cambrian: Western...above Pope Creek coal. Named for Aberdeen, Butler County, Ky., where it stands out in prominent cliffs along |  | | Book (volume) | | rhoColorado; eolorless scheelite (19.66 cc), Kern Cowny, California;...Vivid blue matched benitoite gems from Sai, Benito County, California, consisting of 52 benitoites and 75...operators, Morefield Mine, Amelia, VA; Max & Suzy Berchtold, Royal Rainbow Mine, Laytonville, CA; Ralph...Cantlin, Ellis, ID; Jeannette B. Carillo, Gen1 Center USA, El Paso, TX; Gary Christopher, The Prospectors Cache...James D. Lindberg, Las Cruces, NM; Jack Lowell, Colorado Ge1n & Mineral Co., Tempe, AZ; Steven & Lorna |  | | Journal (article/letter/editorial) | | hydrothermalalteration. Pyroxenites,jacupirangites,biotite-pyroxenites, and aegyrinitesof carbonaritecomp...derivesall rocksof the complexesfrom a parent magmaof biotite-pyroxenite, plus carbonatite. Davies (3) has pointedout...Soniana, Sangua Sandemap, Davib, Tabba-tabba Devil's Hole, Bigger R., Meyer's R. Morefield, Gunnison cry...sis muscovite,generallycontainingsomelithium. Biotite is the typical mica of granitic deposits,but scarcein...at Morefield, Sui-chungand at Andriamena (red biotite). Zinnwaldite occursin the Erongo Schluchtand at |  | | Report (issue) | | Professional Paper 525. Numerous Federal, State, county, and municipal agencies listed on pages A221-A225...37 Utah _________________________________ _ 38 Colorado _____________________________ _ 38 ]{ansas __...41 Texas ________________________________ _ 42 Colorado River basin ___________________ _ 42 Pacific coast...Detergents and pesticides in water supplies ___ _ Acid mine waters __________________________ _ Indus trial...___________ _ Geology of Precambrian rocks of Colorado ____ _ Stratigraphic and paleontologic studies |
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