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| Marshall Pass Districts, Saguache and Gunnison Counties, Colorado U.S. GEOLOGICAL SURVEY PRO FESS I 6N...Bldg., 2600 corridor, 18th and CSts.,NW. DENVER, Colorado-Federal Bldg., Rm. 169, 1961 Stout St. LOS ANGELES...ROLLA, Missouri-1400 Independence Rd. DENVER, Colorado-Map Distribution, Bldg. 810, Federal Center FAIRBANKS...Marshall Pass Districts, Saguache and Gunnison Counties, Colorado By JERRY C. OLSON U.S. GEOLOGICAL SURVEY...Marshall Pass districts, Saguache and Gunnison Counties, Colorado. (U.S. Geological Survey professional |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................Offer ..................................... 3 Gunnison National Forest Crested Butte Mountain Resort........ . . ............ 10 Pike National Forest County of El Paso (Black Forest) Land Exchange Offer ...131 Roosevelt and Gunnison National Forests Mary Ross Quaintance Estate/Bear Creek Development Corporation |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................San Isabel and White River National Forests Lake County Land Exchange Offer (Iocmin40) ......................... 47 White River National Forest Dillon District Land Exchange Joint Venture (Iocmin38) ................................... 94 White River and Gunnison National Forests Sylvan Lake Land Exchange (Iocmin42) |
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| deposits________________________ Quartz-tungsten veins......._____________________ Quartz-gold veins.._________..._________________ ___. Nevada ___________ Elko County. - ______ ... _ Star mine, Harrison Pass _____ ____ Pag« 59...63 Good Hope barite mine, Tuscarora Range _____ _ ._. ________ Humboldt County Golconda manganese-tungsten...Ltd., mine...... --_--______.______ Lincoln County__-__-----_-----_-----___ Tern Piute district.........district____ .________..__ Nevada Scheelite mine.. _ ______ Hooper No. 2 mine __ _____ _ _ Yankee Girl mine_______________ |
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| Aspen 15-minute Quadrangle, Pitkin and Gunnison Counties, Colorado By BRUCE BRYANT GEOLOGICAL SURVEY PROFESSIONAL...A study of an area at the intersection of the Colorado mineral belt with the west flank of the Sawatch...Aspen 15-Minute quadrangle, Pitkin and Gunnison Counties, Colorado (Geological Survey Professional Paper...Bibliography: p. 123 1. Geology Colorado Aspen region. 2. Mines and mineral resources Colorado Aspen region. I. Title.......... ............. Mixed quartz diorite, pegmatite, quartz monzonite, and mica schist and gneiss |
 | Runyon, Simone E., Seedorff, Eric, Barton, Mark D., Steele-MacInnis, Matthew, Lecumberri-Sanchez, Pilar, Mazdab, Frank K. (2019) Coarse muscovite veins and alteration in porphyry systems. Ore Geology Reviews, 113. 103045 doi:10.1016/j.oregeorev.2019.103045 | Journal (article/letter/editorial) |
| Laramide arc in Arizona, as well as at the Yerington district in Nevada. This work describes coarse muscovite...porphyry system), Gunnison (Texas Canyon stock), Grayback (Kelvin-Riverside district), E- Sycamore Canyon...Canyon, the New Cornelia mine (Ajo district), and two systems in the Yerington district. Muscovite is the dominant...Mo-Cu systems related to stocks ranging from quartz monzonite to granite in composition form at shallower...expressions of hydrothermal alteration vary from district to district in intensity, geometry, and mineral assemblage |
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| of the Leadville 1°X2° quadrangle, west-central Colorado : summary and discussion I by Alan R. Wallace...Radioactive dating-Colorado-Leadville Region. 2. Geology, Stratigraphic. 3. Geology-Colorado-Leadville Region...Appendix E. Geochronologic data listed by mining district .. ........... ............. .......... .....geochronology samples, Leadville 1°X2 o quadrangle, Colorado. III IV CONTENTS FIGURES 1. 2. 3. 4. 5. 6...of the Leadville 1°X2° quadrangle, west-central Colorado........................ 2 Map showing major geologic |
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| Basement in Colorado GEOLOGIC A I, Rock Units of the Precambrian Basement in Colorado By OGDEN TWETO...TWETO GEOLOGY OF THE PRECAMBRIAN BASEMENT IN COLORADO U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 1321-A...igneous rocks in outcrop and the buried basement in Colorado UNITED STATES GOVERNMENT PRINTING OFFICE...1912-1983 Rock units of the Precambrian basement in Colorado. (Geological Survey Professional Paper ; 1321-A)...Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado. QE653.T9 1986 551.7'1'09788 I. Title. For sale |
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| --------------------------- Rowley or Reliance mine, by J. A. ~acKallor_____________ PimaCountY----...claims_______________________________________ Pinal County _________________________ ------- ______ -----__...-----__ Santa Cruz CountY---------------------------------------Santo Ni:iio mine, by D. H. Kupfer__...____ Yavapai CountY----------------------------------------------Copper Basin district _______ ------...--------------__ Commercial mine ______ ------------------------------__ Copper Hill mine __________ -------- |
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| GEORGETOWN QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR AND GEORGE H. GARREY...... _·_ .................................... . Quartz gneiss ...................................... _..... : .................................. . Quartz monzonite gneiss (adamellite gneiss) ........................................ _....... __ ... . Quartz monzonite (adamellite) ... ~ ................... : ............................................. . Quartz-bearing diorite and associated hornblendite .... |
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| Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation with the Colorado State Geological...Geological Survey Board and the Colorado Metal Mining Fund PAPER 289 Geology and Ore Deposits of...of the Garfield Quadrangle, Colorado By McCLELLAND G. DINGS and CHARLES S. ROBINSON GEOLOGICAL SURVEY...in cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mitting Fund. A...________________ _ Quartz-mica schist _____________ _ Quartz-hornblende schist _______ _ Quartz-hornblende gneiss |
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| INTRUSIVE ROCKS OF COLORADO By Edward J. Young Prepared in cooperation with The Colorado Mining Industrial Development...Development Board and the Colorado Geological Survey This report is preliminary and has not been edited...intrusive rocks of Colorado » » » *«» In pocket Laramide-Tertiary intrusive rocks of Colorado By Edward...intrusive rocks in the State of Colorado, geologic age localities, mining districts, localities of chemically...This information is shown on the State map of Colorado (scale 1:500,000) accompanying this report. In |
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| Intrusive Rocks ana Associated Ore Deposits in the Colorado Mineral Belt U.S. GEOLOGICAL SURVEY BULLETIN... Alaska Rm. 101,4230 University Dr. LAKEWOOD, Colorado Federal Center, Bldg. 810 MENLO PARK, California...Intrusive Rocks and Associated Ore Deposits in the Colorado Mineral Belt By Charles G. Cunningham, Charles...understand the temporal and spatial evolution of the Colorado Mineral Belt UNITED STATES GOVERNMENT PRINTING...intrusive rocks and associated ore deposits in the Colorado Mineral Belt / by Charles G. Cunningham ... [et |
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| Rocks Northeast of Steamboat Springs, Park Range, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 1041...Rocks Northeast of Steamboat Springs, Park Range, Colorado By GEORGE L. SNYDER with a section on GEOGHRONOLOGY...unstudied area of Colorado and comparison with related rocks elsewhere in Colorado and Wyoming UNITED...rocks northeast of Steamboat Springs, Park Range, Colorado. (Geological Survey Professional Paper 1041) Bibliography:...Docs, no.: I 19.16:1041 1. Intrusions (Geology) Colorado Steamboat Springs region. 2. Geology, Stratigraphic |
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| National Forest RARE II and wilderness areas in Colorado Compiled By Robert P. Dickerson 1 Open-File Report...standards and stratigraphic nomenclature. Denver, Colorado CONTENTS (See also indices listings, p. 173).................................... Grand Mesa, Gunnison, and Uncompahgre National Forests........... Elk............ Drift Creek (2-182).......................................... Perham Creek (2-183)...........(2-185)................................... Clear Creek (2-186)........................................ |
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| 2000 Lakeshore Drive, New Orleans, Louisiana 70148, USA Sarah L. HANSON Geology Department, Adrian College... 110 S. Madison Street, Adrian, Michigan 49221, USA Alexander U. FALSTER and Karen L.WEBBER Department...2000 Lakeshore Drive, New Orleans, Louisiana 70148, USA Abstract Pegmatites enriched in the rare-earth elements...Wisconsin through Colorado to Arizona. Four widely geographically spaced pegmatite districts that are...are compared and contrasted in this study. The pegmatite districts include the circa 1.5 Ga Wausau syenite |
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| important were those in the Central City district, Colorado, from which about 300 tons of high-grade...Silver Cliff mine, Wyoming; the Jesse D No. 1 and No. 2 claims, Utah; and the Merry Widow mine, New Mexico...Utah; the Schwartzwalder (Ralston Creek) and Los Ochos mines, Colorado; the Early Day and Buckhorn claims...mines, Washington; the W. Wilson mine, Montana; the White King mine, Oregon; the deposits in the Pryor...deposits in the Dripping Spring quartzite, Gila County, Ariz. According to Nininger (1954, p. 43), as |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................(administered by White River National Forest) Slate Creek ............................................................................................ 15 Gunnison and White River National Forests Mountain Coal...Complete citations are provided on the figures.] COLORADO Gunnison and White River National Forests Mountain |
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| the Poncha Springs NE Quadrangle, Chaffee County,Colorado By RALPH E. VAN ALSTINE With a section on ... 626 Prepared in cooperation with the Colorado State Mining Industrial Development Board UNITED STATES...rocks _____________________________ _ Gneissic quartz monzonite ______________ _ Tabular intrusive rocks _________________...Van Alstine and Doak C. Cox _________ _ Colorado-American mine ______________ -_Delay adit and Lloyd shaft...--_-----_Manganese Hill and Chimney Hill mines_Last Chance mine _________________ -_-_Other fluorspar deposits ________ |
 | | Thesis/Dissertation |
| mapping technique in the Italian Mountain area, Colorado Item Type text; Thesis-Reproduction (electronic)...MAPPING TECHNIQUE IN THE ITALIAN MOUNTAIN AREA, COLORADO By Henry Albert Truebe A Thesis submitted to... . . . . . . . . . . . . . . . . . . . . . . . Mining History . .......................................tectonic setting of the Italian Mountain area in Colorado. . . . . . . . . . : ................... 2 Generalized...mapped by dividing the Italian Mountain area, Colorado into 884 100-meter grid spaces and inventory |
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| in Colorado GEOLOGICAL SURVEY BULLETIN 1422-D Nomenclature of Precambrian Rocks in Colorado By...Ogden, 1912Nomenclature of Precambrian rocks in Colorado. (Contributions to stratigraphy) (Geological Survey...Pre-Cambrian. 2. Geology, Stratigraphic Nonmenclature Colorado. I. Title. II. Series. HI. Series: United States... ILLUSTRATION Page FIGURE 1. Map of parts of Colorado and adjoining States showing distribution of Precambrian...1. Classification of Precambrian rock units in Colorado............................. D4 in CONTRIBUTIONS |
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| 1953 ROCKY MOUNTAIN SECTION (GSA) LOUIS BERYL PEGMATITE, BLACK HILLS, SOUTH DAKOTA Walter C. Ackerman...School of Mines, Rapid City, S. D. The Louis beryl pegmatite is located in the Southern Black Hills, 25 miles...Harney Peak batholith. Mapping shows that the pegmatite is concordant with the schistosity planes of the...vertically. The pegmatite is rudely zoned. Petrologic studies show that the core, which is quartz and microcline...prevalent except in the core. The quartz-mica schist surrounding the pegmatite is highly altered and feldspathized |
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| description of the geology, mining history, and production of the major gold-mining districts in 21 States...relations ---------------------------History of gold mining and trends in production_ J\labama -----------...--------------Cleburne County ----------~----------------- Tallapoosa County --------------------------Alaska...------------------Cochise County -----------------------------Gila County --------------------------------Greenlee...ee County ----------------------------R[aricopa County ----------------------------R[ohave County -- |
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| indicate annotation of thesis title by addition of county. Capitalization of terms in revised abstracts was...particular to Mis s Edith Rich, and to the Natrona County Library, for procuring theses. Many university...WARD OWEN, 1951, Cambrian diabase flow in [Utah County], central Utah: Brigham Young Univ. M. S. thesis...cified zone contains jasper and massive or columnar quartz and exhibits pipe-like structures perpendicular...The SiliCified rocks contain jasper, chert, and quartz in layers, veins I or irregular masses and are |
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| Sweet Home rhodochrosite specimen mine, Alma District, Central Colorado: the porphyry molybdenum–fluorine...containing quartz– sphalerite–tetrahedrite–rhodochrosite–fluorite in the Sweet Home Mine, Alma District, Colorado...For the last 13 years up until 2004, however, the mine has produced world-class rhodochrosite specimens...and local quartz–molybdenite veins in the nearby area; (4) a small pegmatite within the mine with an age...Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA e-mail: pbartos@mines |
