 | | Journal (article/letter/editorial) | | METAMORPHOSED PROTEROZOIC BASE-METAL SULFIDE OCCURRENCES, COLORADO: A RE-EVALUATION OF GAHNITE COMPOSITION AS A GUIDE...metamorphosed to the amphibolite and granulite facies in Colorado, many of which are spatially associated with Mg-rich...guide to sulfide ores. Zincian spinel from the Independence, Bon Ton, and Sedalia deposits and some cases...massive-sulfide deposits in Mg-rich alteration zones in Colorado, causes a marked enrichment in the spinel component...guide, massive sulfides, magnesium enrichment, Colorado. SOMMAIRE Le spinelle zincifère [(Zn,Fe,Mg)Al2O4] |  | | Report (issue) | | IN CHAFFEE, FREMONT, AND JEFFERSON COUNTIES, COIO. By WALDEMAR LINDGREN. INTRODUCTION. Colorado is not...contributed to this output, but only two Lake (Leadville district) and San Juan yielded notable amounts. The Leadville...Juan County slightly exceeded 1,500,000 pounds. The copper ores, properly so called, of Colorado comprised...from San Juan County. It may be said that Colorado does not contain a single copper mine of prominence...prominence. Of the counties mentioned in the title Chaffee produced 349,466 pounds of cop'per from 6,249 tons |  | | Report (volume) | | Zinc-Copper-Lead Sulfides and Zinc Spinel (Gahnite) in Colorado U,S. GEOLOGICAL SURVEY BULLETIN 1550 , Precambrian...Zinc-Copper-Lead Sulfides and Zinc Spinel (Gahnite) in Colorado By DOUGLAS M. SHERIDAN and WILLIAM H. RAYMOND...zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado. (Geological Survey bulletin ; 1550) Bibliography:...Geology, Stratigraphic-Precambrian. 3. Geology-Colorado. I. Raymond, William H. II. Title. III. Series...potential . . . . . . . . Deposits in other areas in Colorado Distribution and significance of gahnite Economic |  | | Report (volume) | | the Browns Canyon Wilderness Study Area, Chaffee County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1716-C...the San Isabel National Forest, south-central Colorado: U.S. Geological Survey Bulletin 1638, p. 40-42...SOUTH-CENTRAL COLORADO Mineral Resources of the Browns Canyon Wilderness Study Area, Chaffee County, Colorado...Area, Chaffee County, Colorado. (Mineral resources of wilderness study areas South-Central Colorado; ch...Mines and mineral resources Colorado Browns Canyon Wilderness. 2. Geology Colorado Browns Canyon Wilderness |  | | Report (issue) | | Sedalia mine area and its Proterozoic deposits of base-metal sulfides and gahnite, Chaffee County, Colorado...standards and stratigraphic nomenclature. Denver, Colorado CONTENTS Page Abstract.................................................. Rocks of the Sedalia mine area.......................................... Proterozoic...1. Geologic map of the Sedalia mine area, Chaffee County, Colorado....................................the Sedalia mine and of other Proterozoic sulfide deposits in the Salida area, Colorado............. |  | | Report (volume) | | Minerals of Colorado: A 100- Year Record By EDWIN B. ECKEL GEOLOGICAL SURVEY BULLETIN 1 1 14 A...knowledge____________________________________ Future of Colorado mineralogy______________________________________...mineral localities and metallic mineral deposits of Colorado ________________________________ In pocket III...mineral localities and metallic mineral deposits of Colorado, has not been included in this reprint. Many of...especially Fischer and others, 1946). MINERALS OF COLORADO: A 100-YEAR RECORD By EDWIN B. EcKEL ABSTRACT |  | | Report (volume) | | San Isabel National Forest, South-Ce tral Colorado COLORADO An Assessment of the Mineral Resource...the San Isabel National Forest, South-Central Colorado By Richard B. Taylor, Rebecca j. Stoneman, and...structures 12 Mineral resources-Locatable minerals 12 Mining and exploration history 12 Metals 13 Industrial...the San Isabel National Forest, south-central Colorado Mineral resource potential map of the San Isabel...Isabel National Forest, south-central Colorado FIGURES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Book (volume) | | ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts .................................... |  | | Journal (article/letter/editorial) | | of COLORADO ED RAINES Geology Museum Colorado School of Mines 1310 Maple Street Golden, Colorado 80401...noted Figure 1. Camp Bird mine, level 2, Sneffels district, Ouray County. Raines-Pettem collection,...photographer unknown. B etween 1868 and 1922, Colorado produced almost 260 million pounds of copper....from the Leadville district, with another 50 million pounds mined in San Juan County (Henderson 1926).... During the twentieth century, the Gilman district surpassed Leadville in total copper production with |  | | Journal (article/letter/editorial) | | 1965 MINERALOGY AND PARAGENESIS OF THE COTOPAXI, COLORADO, Ct-Zn SKARN DEPOSIT Cuenr.BsA. Sar-orrr,Departmentof...base-metal deposits crops out in south-central Colorado. At Cotopaxi mineralization is confined to a small...nodular sillimanite schist also are mineralized. Both biotite gneiss and nodular sillimanite schist are...INrnonucrroN Nearly all metallic mineralization in Colorado is associatedwith igneous rocks and structures...but little-studied ore deposits in south-central Colorado is Precambrian in age. These deposits (Fig. 1) |  | | Report (issue) | | mineral resources of the Browns Canyon area, Chaffee County, Colorado By A.M. Leibold 1 , D.E. Detra 1 , and...does not imply endorsement by the USGS. Denver, Colorado UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL...mineral resources of the Browns Canyon area, Chaffee County, Colorado By A.M. Leibold 1 , D.E. Detra 1 , and...does not imply endorsement by the USGS. Denver, Colorado CONTENTS Page INTRODUCTION........................................ Browns Canyon fluorspar district.............................. Railroad Gulch-Stafford |  | | Report (issue) | | River Adjacent Wilderness Study Area, Jackson County, Colorado By Robert P. Dickerson 1 and John R. McDonnell...Geological Survey Denver, Colorado 2 U.S. Bureau of Mines Denver, Colorado CONTENTS Abstract...................................... 1 1 3 3 3 3 6 Mining activity.........................................(CO-010-104) Wilderness Study Area, Jackson County, Colorado. ABSTRACT The Platte River Adjacent Wilderness...(CO-010-104) consists of 30 acres in Jackson County, Colorado, No mineral occurences, energy resources, |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |  | | Report (issue) | | BULLETIN 71 Mineral Resources of Taos County, New Mexico by JOHN H. SCHILLING Description of mineral...INSTITUTE OF MINING & TECHNOLOGY CAMPUS STATION SOCORRO, NEW MEXICO NEW MEXICO INSTITUTE OF MINING 8c TECHNOLOGY................................... 11 HISTORY OF MINING .................................................................................... Kyanite-sillimanite ......................................................... 35 Spanish Main prospect ["Govenor's Mine"(?)] ....................................... 36 |  | | Report (volume) | | Wilderness, Lake County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1636. ~ COLORADO Mineral Resource...Potential of Mount Massive Wilderness, Lake County, Colorado By R.E. VAN LOENEN, G.K. LEE, and D.L. CAMPBELL...potential of Mount Massive Wilderness, Lake County, Colorado I by R.E. Van Loenen ... [et al.]. p. em....: I 19.3: 1636 1. Mines and mineral resources-Colorado-Mount Massive Wilderness. 2. Mount Massive Wilderness...Wilderness, San Isabel National Forest, Lake County, Colorado. The area was established as a wilderness |  | | Report (issue) | | 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...Counties, Colorado (Geological Survey Professional Paper 1073) Bibliography: p. 123 1. Geology Colorado Aspen...Aspen region. 2. Mines and mineral resources Colorado Aspen region. I. Title. II. Series: United States...Ordovician rocks................................ Chaffee Group....................................... Parting |  | | Report (issue) | | Pass Districts, Saguache and Gunnison Counties, Colorado U.S. GEOLOGICAL SURVEY PRO FESS I 6N A L P A PE...Bldg., 2600 corridor, 18th and CSts.,NW. DENVER, Colorado-Federal Bldg., Rm. 169, 1961 Stout St. LOS ANGELES...Survey offices: ROLLA, Missouri-1400 Independence Rd. DENVER, Colorado-Map Distribution, Bldg. 810, Federal...Pass Districts, Saguache and Gunnison Counties, Colorado By JERRY C. OLSON U.S. GEOLOGICAL SURVEY PROFESSIONAL...Pass districts, Saguache and Gunnison Counties, Colorado. (U.S. Geological Survey professional paper ; |  | | Report (volume) | | ............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |  | | Report (volume) | | p. Supt. of Docs. No.: I 19.3:1603 1. Geology Colorado Aspen Region. I. Martin, Peter L. III. Series...in brief 1 The history of the Aspen region From mining to recreation 7 The story of the land 13 Rushing...location of Aspen and other major features in western Colorado 8 3. Streams, peaks, settlements, roads, trails...showing issues of mining litigation at Aspen 11 6. Chart showing growth and decline of mining in Aspen 1880-1950...nestles in the Roaring Fork valley of western Colorado (Frontispiece), surrounded by imposing peaks of |  | | Report (volume) | | Park Range Vicinity, Jackson and Routt Counties, Colorado By GEORGE L. SNYDER, U.S. GEOLOGICAL SURVEY, LOWELL...Park Range vicinity, Jackson and Routt Counties, Colorado. (Studies related to wilderness-wilderness areas)...mineral resources-Colorado--Jackson County. 2. Mines and mineral resources-Colorado-Routt County. 3. Geology-Colorado--Jackson...Geology-Colorado--Jackson County. 4. GeologyColorado--Routt County. I. Patten, Lowell L. II. Daniels, Jeffrey...Zirkel Wilderness and northern Park Range vicinity, Colorado, that are being considered for wilderness designation |  | | Journal (article/letter/editorial) | | view of the Tenderfoot mine (about 19131, Esterbrook copper district, Albany County. John Taylor collection...and Grace Dyck and wus titled “The Sunrise Iron Mine near Hartville, Wyoming”; it appeared in the MaylJune...titled “The Copper Mountain Pegmatite District, Freniont County, Wyoming” and was in the JulylAugust 2001...most notable ones. The localities are listed by county and then in alphabeticnl order. Where numerous...under the district name. District names are from Hausel (1986). Localities by County Albany County Allanite |  | | Report (volume) | | Director Published in the Central Region, Denver, Colorado Manuscript approved for publication November 4...1988), and on December 7, 1989, at the Northwest Mining Association 95th Annual Convention and Trade Show...the Mineral Hill and Warm Springs mining districts, Blaine County, Idaho: Idaho Bureau of Mines and Geology...Deposits in the Lake Creek Mineralized Area, Blaine County, South-Central Idaho By Bradford R. Burton and...Mineral Deposits in the Washington Basin Area, Custer County, South-Central Idaho By J. Brian Mahoney H. Mineral |  | | Book | | MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Sine —_—< ¢ te om At _SHT 40...MINES AND MINERALS OF THE GREAT AMERICAN RIFT (COLORADO-NEW MEXICO) Richard Walker Holmes and Marrianna...Mines and minerals of the Great American Rift (Colorado-New Mexico). Bibliography: p. Includes index...index. 1. Mines and mineral resources—Colorado. 2. Mines and mineral resources—New Mexico. I. Kennedy, Marrianna...enter must be obtained to prevent trespass. Old mine workings are dangerous and entering underground |
|
