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| 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 |
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| — _ ; COLORADO GEM TRAILS AND MINERAL GUIDE ! ■ : ' BOOKS BY RICHARD M. PEARL Colorado Gem Trails...Trails and Mineral Guide Colorado Rocks, Minerals, Fossils America’s Mountain: Pikes Peak and the Pikes...Nature As Sculptor: A Geologic Interpretation of Colorado Scenery Guide to Geologic Literature Popular Gemology...Gemology Mineral Collectors Handbook Colorado Gem Trails The Art of Gem Cutting (With Dr. H. C. Dake)...Dake) * RICHARD M. PEARL ★ COLORADO GEM TRAILS AND MINERAL GUIDE ★ SKETCH MAPS BY MIGNON WARDELL PEARL |
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| MILEAGE L OGS. REVISED EDITION Revised Edition, COLORADO GEM TRAILS AND MINERAL GUIDE HICllAHD :--1. PEARL...an extensive ¥em and mineral collecting tour 01 Colorado, revealing the interesting places where Nature...Swallow, Publisher) 2679 South York Street Denver, Colorado 80210 - , =· - ·, BOOKS BY RICHARD M. PEARL...PEARL Exploring Rocks, Minerals, Fossils in Colorado America's Mountain: Pikes Peak and the Pikes Peak...Atlas of Colorado American Gem Trails Nature As Sculptor: A Geologic Interpretation of Colorado . Scenery |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO .............................................................................. 28 Pike and San Isabel National Forests Shepard and Associates .........Complete citations are provided on the figures.] COLORADO Gunnison and White River National Forests Mountain...1981) ........................... 35 Pike and San Isabel National Forests Shepard and Associates Part of |
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| Potential of t.he San Isabel National Forest, South-Ce tral Colorado COLORADO An Assessment of the...Resource Potential of the San Isabel National Forest, South-Central Colorado By Richard B. Taylor, Rebecca...structures 12 Mineral resources-Locatable minerals 12 Mining and exploration history 12 Metals 13 Industrial...2. Geologic map of the San Isabel National Forest, south-central Colorado Mineral resource potential...potential map of the San Isabel National Forest, south-central Colorado FIGURES 1. 2. 3. 4. 5. 6. 7. 8. 9. 10 |
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| GEOLOGICAL SURVEY Locatable Mineral Reports for Colorado, South Dakota, and Wyoming provided to the U.S.............................................. 1 COLORADO ................................................................ 27 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) ......................... 138 FIGURES OR ATTACHMENTS COLORADO Pike National Forests Shepard and Associates Land |
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| 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 |
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| 1 COUNTY REPORT HYSICAL >ci 8 PHYSICAL •CI. .Lib. IES TN 24 C3 1ERAL RESOURCES OF A34 1 IPINE...IPINE COUNTY, CA! IA -*ci?2®^?^a£~Vfes^A^Gw^i I ver Mou nta i nV-*- Digitized by the Internet...ALPINE COUNTY, CALIFORNIA by WILLIAM B.CLARK With sections on the Zaca gold-silver mine and the...the Leviathan COUNTY REPORT sulfur mine by James R. Evans 8 1977 CALIFORNIA DIVISION OF MINES AND...2 i DOCS. -US Frontispiece. Typical Alpine County scenery. View looking southeast across Twin Lakes |
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| 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...Mount Massive Wilderness, San Isabel National Forest, Lake County, Colorado. The area was established as |
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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)...(2-157).......................................... San Isabel/Pike National Forest.............................National Forest RARE II and wilderness lands, Colorado.............. vi in pocket INTRODUCTION Information...National Forest lands and National Grasslands in Colorado, that have been, or are being, considered for |
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| Uranium Deposits of the Caribou Area, Boulder County Colorado GEOLOGICAL SURVEY BULLETIN This report concerns...Uranium Deposits of the Caribou Area, Boulder County Colorado By F. B. MOORE, W. S. CAVENDER, and' E. P....Uranium-bearing lead-silver veins___________________ Mine descriptions_____________________________________________...mines______________ ____________________ _ Caribou mine,_____--_--_____________________________ No Name...Poorman mine____ ______________ ________ . Sherman mine.. _____ ______ \. Columbia, Spencer, and Socorro |
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| the Sweetwater Canyon Wilderness Study Area, Fremont County, Wyoming U.S. GEOLOGICAL SURVEY BULLETIN 1757-D...the Sweetwater Canyon Wilderness Study Area, Fremont County, Wyoming By WARREN C. DAY, RANDALL H. HILL...the Sweetwater Canyon Wilderness Study Area, Fremont County, Wyoming. (Mineral resources of wilderness...Canyon Wilderness Study Area (WY-030-101), Fremont County, Wyoming. CONTENTS Abstract Dl Summary Dl...Survey D4 Appraisal of identified resources D5 Mining history D5 Commodities D6 Lode-gold deposits and |
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| Series 30 Bibliography and Index of Colorado Geology, 1984-1989 Colorado Geological Survey Department of...Resources Denver, Colorado 1990 Information Series 30 Bibliography and Index of Colorado Geology, 1984-1989...Institute under contract to the Colorado Geological Survey Colorado Geological Survey Department of...of Natural Resources Denver, Colorado 1990 ii FOREWORD In recognition of the need to more effectively...published literature on the state's geology, the Colorado Geological Survey is pleased to release Information |
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| 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...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]...treize gisements de sulfures protérozoïques au Colorado qui ont atteint le faciès amphibolite ou granulite |
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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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| Geology and Ore Deposits of the Front Range Colorado By T. S. LO\'ERING and E. N. GODDARD GEOLOGICAL...cooperation with the Colorado State Geological Survey Board and the Colorado Metal Mining Fund ~ oopr is...__________________________________________ _ 1 Summary of mining districts---.---------------------Introduction..._________________ _ Harding sandstone _________________ _ Fremont limestone _________________ _ Devonian _______...Pre-Cambrian deposits _________________________ _ Mine descriptions __________________________ _ 39 39 |
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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 |
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| Creek Wilderness Study Area, Fremont, El Paso, and Teller Counties, Colorado U.S. GEOLOGICAL SURVEY BULLETIN...BULLETIN 1716-B COLORADO DEFINITION OF LEVELS OF MINERAL RESOURCE POTENTIAL AND CERTAINTY OF ASSESSMENT...resource potential of the San Isabel National Forest, south-central Colorado: U.S. Geological Survey Bulletin...SOUTH-CENTRAL COLORADO Mineral Resources of the Beaver Creek Wilderness Study Area, Fremont, El Paso, and...and Teller Counties, Colorado By David A. Lindsey, Jerry R. Hassemer, Ronny A. Martin, and Richard B |
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| 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...sillimanite schist also are mineralized. Both biotite gneiss and nodular sillimanite schist are regional...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) |
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| Wilderness Area, Eagle, Pitkin, and Lake Counties, Colorado COLORADO • Mineral Resources of the Holy Cross...Wilderness Area, Eagle, Pitkin, and Lake Counties, Colorado By ALAN R. WALLACE, GREGORY K. LEE, and DAVID...Wilderness Area, Eagle, Pitkin, and Lake Counties, Colorado by Alan R. Wallace ... [et al.]. p. cm.-(U.S....no.: I 19.3:1879 1. Mines and mineral resources-Colorado-Holy Cross Wilderness. 2. Holy Cross Wilderness...White River and San Isabel National Forests, Eagle, Pitkin, and Lake Counties, Colorado. This area was established |
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| Browns Canyon Wilderness Study Area, Chaffee County, Colorado U.S. GEOLOGICAL SURVEY BULLETIN 1716-C DEFINITION...resource potential of the San Isabel National Forest, south-central Colorado: U.S. Geological Survey Bulletin...SOUTH-CENTRAL COLORADO Mineral Resources of the Browns Canyon Wilderness Study Area, Chaffee County, Colorado...Chaffee County, Colorado. (Mineral resources of wilderness study areas South-Central Colorado; ch. C)...Mines and mineral resources Colorado Browns Canyon Wilderness. 2. Geology Colorado Browns Canyon Wilderness |
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| DEFINITION OF SOUTH A MINERAL CENTRAL BELT COLORADO. IN • JOHN W. GABELMAN. CONTENTS. PAGE Abstract............... Geologichistory of south central Colorado ................................ 180 182 182.................................. South central Colorado mineral belt ...................................Cotopaxizinc mine .............................................. 189 190 190 192 193 193 193 Marion mine ............................... 196 196 Areas of district definitionwith lessthan $100,000production... |
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| collecting. Although Texas is not known for its mining industry, be cause of its large oil and gas exploration...Llano County in the early 1900s but was flooded by Lake Buchanan in 1938. The Terlingua mining district...minerals. Mining here was contin uous from 1900 to the middle 1940s; but the Mariposa mine, which produced...& Minerals on "The Weeks Pegmatite Mine, Wakefield, Carroll County, New Hampshire" (March/April 1991)...66, May/June 1991 197 LOCALITIES BY COUNTY Bastrop County KEY mm T * ? — — — — best occurrence |
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| Wilderness Study Area, Huerfano and Pueblo Counties, Colorado By Margo I. Toth, 1 Daniel R. Birch, 1 and G...the Greenhorn Mountain Wilderness Study Area, San Isabel National Forest, Huerfano and Pueblo Counties,...Wilderness Study Area was so established by the Colorado Wilderness Act, Public Law 96-560, December 22........ 7 Mining history and production....................................... 7 Mining districts and...located, similar Precambrian rocks elsewhere in Colorado have tungsten in skarn-type deposits. The potential |
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| 2600 corridor, 18th and C Sts., NW. • DENVER, Colorado--Federal Bldg., Rm. 169, 1961 Stout St. • LOS...ROLLA, Mlssourl--1400 Independence Rd. • DENVER, Colorado--Map Distribution, Bldg. 810, Federal Center •...Introduction 2 Appraisal of identified resources 3 Mining history 3 Mineral appraisal 3 Assessment of mineral...valleys. The study area is underlain primarily by schist and quartz monzonite (fig. 2) of Proterozoic age...likely to be developed. Areas of exposed Pinal Schist have low mineral resource potential for copper |
