 | | Journal (article/letter/editorial) | | SOME MINERAL OCCURRENCES IN THE GUFFEY REGION, COLORADO* Jeuos E. Bnven, []niversity of Michigan, Ann...north-central Fremont County and southeast Park County in the Front Range of central Colorado. Its center is...those which have been correIated with the Idaho Springs formation and closely associatedmigmatite. Cord.ierite:Sterrett...across are interstitial to radiating fibers of anthophyllite which may reach a length of 3 centimeters. This...previously not been reported from this part of Colorado. Aggregates of sillimanite needlesin gneissesin |  | | Report (volume) | | 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 |  | | Report (issue) | | Some High-Grade Cordierite Gneisses, Front Range, Colorado Dolores J. Gable U.S. Geological Survey, Denver...SOCIETY OF AMERICA, INC. Colorado Building P.O. Box 1719 Boulder, Colorado 80302 Printed in the United...65 65 66 67 ... Vlll CORDIERITE GNEISSES, COLORADO FRONT RANGE Factors determining the mineral assen1blages...75 77 81 85 FIGURES l. Map of Front Range, Colorado ............... ................. .......... ...cordierite-bearing rocks in central part of Front Range, Colorado ................................. ....... ... |  | | Journal (article/letter/editorial) | | ALBION, COUNTY, COLORADO. ERNEST No. 4 BOULDER E. WAHLSTROM. ABSTRACT. At Camp Albion, Boulder County...County, Colorado, an unusual assemblageof ore and gangue minerals is found in a shearedand brecciatedzone...Albion in the west centralpart of BoulderCounty,Colorado(Fig. I). It is practicallyinaccessible in winter...D. Crawfordand R. D. Georgeof the Universityof Colorado contributed manyvaluablesuggestions.The chemical...Geology,University of Colorado. FIG. I. Outline map of north-central Colorado showing location of Camp |  | | Journal (article/letter/editorial) | | Mica Lode pegmatite, Eight Mile Park, Fremont county, colorado. Two other new triplite localities are the...district and another pegmatite in El Paso county, colorado. The triplite occurs in hydrothermal replacement...pegmatite deposits of Eight MiIe Park, Fremont County, Colorado, the junior author obtained a number of large...three main types: (1) Pikes Peak granite, (2) Idaho Springs schist, and (3) injection gneissformed by litpar-lit...518 TRIPLITE CRYSTALS FROM COLORADO 519 ing belt of Idaho Springs schist. The scutheastern part |  | | Report (issue) | | Geology of Precambrian Rocks Central City District Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 474-C Prepared... Geology of Precambrian Rocks Central City District Colorado By P. K. SIMS and D. J. GABLE SHORTER CONTRIBUTIONS...1918Geology of Precambrian rocks, Central City district, Colorado, by P. K. Sims and D. J. Gable. Washington, U...district, Colorado. 1964. (Card2) 1. Geology, Stratigraphic Pre-Cambrian. 2. Geology Colorado Gilpin Co...Gilpin County, Colorado. 2. Geologic sections of the Central City district, Gilpin County, Colorado. 3. |  | | Report (volume) | | Eureka Gulch Area Central City District Gilpin County Colorado GEOLOGICAL SURVEY BULLETIN This report concerns...Eureka Gulch Area Central City District Gilpin County Colorado By P. K. SIMS, F. W. OSTERWALD, and E. W. TOOKER...OF CLEAR CREEK, GILPIN, AND LARIMER COUNTIES, COLORADO GEOLOGICAL SURVEY BULLETIN 1032-A This report...gneiss___________________________ _________ Cordierite-anthophyllite-garnet gneiss. _______________________ Amphibolite...23 24 27 29 31 IV GEOLOGY AND ORE DEPOSITS, COLORADO ILLUSTKATJONS PLATE 1. Geologic maps of the Eureka |  | | Report (issue) | | Crystalline Rocks, Park and Jefferson Counties, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 608-B General...Crystalline Rocks, Park and Jefferson Counties, Colorado By C. C. HAWLEY and R. A. WOBUS GEOLOGY AND ORE...TARRYALL REGION, PARK AND JEFFERSON COUNTIES, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 608-B...Tarryall region, Park and Jefferson Counties, Colorado) (Geological Survey Professional Paper 608-B)...Stratigraphic Pre-Cambrian. 2. Geology-Colorado Park Co. 3. Geology Colorado Jefferson Co. 4. GraniteColorado |  | | 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 |  | | 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...mineralization process. The overall process of formation, although complex, can be separated into the following...distinct stages: amphibolite formation, almost exclusively confned to the formation of silicate mineralsl pegmatoid...pegmatoid stage, mainly the formation of silicate minerals, but some oxides, aluminates, tungstates; |  | | Report (issue) | | QlJADRANGLE (TOGETHER 'VITH THE EMPIRE DISTRICT) COLORADo· BY JOSIAH E. SPURR AND GEORGE H. GARREY WITH..................._.......... . Distribution in Colorado ................................................. . . . . . . . . . . . . . . . . . . . 97 Idaho Springs auriferous area. __ ............. _.. _. _...._,_........................ 102 Extension from Boulder beyond Leadville .. , ...... _._._........................................... . 102 Ores in Boulder County.............. . . . . . . . . . . . ...... |  | | Report (issue) | | 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) .................................. 138 FIGURES OR ATTACHMENTS COLORADO Pike National Forests Shepard and Associates Land...National Forests Lake County Land Exchange Offer 1. Exhibit A: Property that Lake County will consider exchanging |  | | Journal (article/letter/editorial) | | Childs Mielenz, Bureau of Reclamation, Denver, Colorado Werner Nowacki, Universitiit, Bern, Switzerland...Nevada. PETROLOGY OF THE GIIFFEY-MICANITE RXGION, COLORADO university ^iiff-'"l; lll'i.l.., "t Michigan...southeast part of Park County and in the north-central part of Fremont County, Colorado, is underlain chiefly...The preCambrian rocks include: (1) The Idaho Springs formation, which consists of mica schists and gneisses...of granitic material into rocks of the Idaho Springs formation. In addition to the pegmatite minerals |  | | Journal (article/letter/editorial) | | of COLORADO ED RAINES Geology Museum Colorado School of Mines 1310 Maple Street Golden, Colorado 80401...Ouray County. Raines-Pettem collection, photographer unknown. B etween 1868 and 1922, Colorado produced...with another 50 million pounds mined in San Juan County (Henderson 1926). During the twentieth century...mined (Beaty, Landis, and Thompson 1990). Total Colorado production prior to 1958 reached 585 million pounds...copper; Colorado mined gold, silver, lead, and zinc. Nearly all of the copper produced in Colorado has been |  | | Report (issue) | | carbonate replacement ores of the Drum Mountains, Juab County, Utah, by T. S. Levering, J. H. McCarthy, and Irving...Thortveitite associated with fluorite, Ravalli County, Mont., by R. L. Parker and R. G. Havens __-____-__-____...fluorine in mineralized tuff, Spor Mountain, Juab County, Utah, by W. R. Griffitts and L. F. Rader, Jr....rocks at the Georgia Nuclear Laboratory, Dawson County, Ga., by J. W. Stewart---___-_---_---_----_---...in Precambrian rocks, Central City quadrangl -, Colorado, by P. K. Sims and D. J. Gable...._______..___ |  | Collins, Donley S., Cobban, Robert R., Foord, Eugene E., Murphy, Jack A. (1989) Bibliography for update and revision of U.S.G.S. Bulletin 1114, Minerals of Colorado -- a 100 year record, by Edwin B. Eckel, Part A - Paper copy --Bibliography data file disks. Open-File Report Vol. 1989 (89-206) US Geological Survey doi:10.3133/ofr89206a | Report (issue) | | Survey Denver, Colorado Department of Geology, Denver Museum of Natural History Denver, Colorado NOTE FOR...revision of U.S.G.S. Bulletin 1114, Minerals of Colorado A 100 year record, by Edwin B. Eckel By Donley...Prepared in cooperation with Friends of Mineralogy - Colorado Chaptar, and the Denver Museum of Natural History...references dealing with the mineralogy of the state of Colorado. It is part of a more than 10 year effort to update...and revise U.S.G.S. Bulletin 1114, Minerals of Colorado: A 100 year record, by Edwin B. Eckel (1961). |  | | Report (issue) | | 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 |  | | Report (issue) | | solutions, Silverton caldera, San Juan Mountains, Colorado, by Wilbur S. Burbank and Robert G. Luedke---...metallization in the Central mining district, Grant County, New Mexico, by W. R. Jones, R. M. Hernon, and...co~tl in the Trinidad coal field, south-central Colorado, by Ross B. Johnson______________________ 154...form~tion in the southeastern Uinta Basin, Utah and Colorado, by W. B. Cashion____________________________...sediments of the Humboldt River Valley, Humboldt County, Nevada, by Philip Cohen________ 165. Variable |  | | Report (volume) | | ___---_ front__--__Ft___..-- Company, County Collections Colorado Commission,Committee Communications Comparative...Faculty facsimile fascicle February Figure Florida formation francais frontispiece Fort BIBLIOGRAPHY OF NORTH... v. 3. New York, N. Y. Colorado Mining Association Yearbook, 1947. Colorado School of Mines Quarterly...12. Honolulu, T. H. Hopper, v. 8. Norman, Okla. Idaho Bureau of Mines and Geology: Mineral Resources Reports...Reports 3-5; Pamphlets 75-80. Moscow, Idaho. Illinois State Academy of Science Transactions, v. 40. Springfield |  | | Report (issue) | | COPY Bedrock Geology of the Kassler Quadrangle Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 421-B Bedrock... Bedrock Geology of the Kassler Quadrangle Colorado By GLENN R. SCOTT GEOLOGY OF THE KASSLER QUA.DRANGLE...DRANGLE, JEFFERSON AND DOUGLAS COUNTIES, COLORADO GEOLOGICAL SURVEY PROFESSIONAL PAPER 421-B A survey...survey of the east flank of the Colorado Front Range with emphasis on Cretaceous rocks and on structural...and Cenozoic sedimentary rocks-Con. Niobrara formation _________________________ _ Fort Hays limestone |  | | Report (issue) | | Mineral Belt Gilpin and Clear Creek Counties. Colorado GEOLOGICAL SURVEY PROFESSIONAL Prepared on...Mineral Belt Gilpin and Clear Creek Counties, Colorado By E. W. TOOKER GEOLOGICAL SURVEY PROFESSIONAL...mineral belt, Gilpin and Clear Creek Counties, Colorado. Washington, U.S. Govt. Print. Off., 1963. v,...Counties, Colorado. 1963. (Card 2) 1. Geology Colorado Front Range. 2. Petrology Colorado Front Range...Range. 3. Ore deposits Colorado. 4. Mineralogy Colorado Front Range. 5. Metamorphism. I. Title. (Series) |  | | Report (issue) | | METAMORPHIC ROCKS OF THE CENTRAL FRONT RANGE. COLORADO By Dolores J. Gable ' Edited bv William. D....35 EARLY PROTEROZOIC PALEOGEOGRAPHY OF NORTHERN COLORADO........................ 3 6 REGIONAL STRUCTURE...Records Section, Denver Federal Center, Denver, Colorado] Page Plate 1. Geologic map of the Proterozoic...Range, Colorado ......... in pocket 2. Sample locality map of the central Front Range, Colorado.........20. 21. 22. 23. Index map of the Front Range, Colorado.............................................. |  | | Book (edition) | | anthracite region 10. Structure section in Tazewell County, east of Richlands, southwest 8. 9. 12. 13. ...showing distribution of different kinds of coal in Colorado Map showing distribution of different kinds of...of slate in the United States Section showing formation of residual clay Section of a sedimentary clay...grahamite fissure to anticlinal fold, in Ritchie County, W. Va Plan of Trinidad pitch lake Section of gilsonite...showing development of 270 88. Map of parts of Idaho, Wyoming and Utah, showing localities of 273 Upper |  | | Report (volume) | | further subdivided by geographic areas (State and county) and by subjects, which include general, geology...the White Mountains, Mono County, Calif., and near Hawthorne, Mineral County, Nev. KYANITE Kyanite generally...Baker Mountain, Prince Edward County, and Willis Mountain, Buckingham County, in Virginia, and at Henry...Henry Knob, near Clover, York County, S.C. These are the only deposits now producing kyanite in the United...in Humboldt Queen Canyon, near Oreana, Pershing County, Nev., however, is the only known commercial deposit |  | | Report (volume) | | Chicago, 111. Colorado College Publications: Science Series, vol. 12, no. 6. Colorado Springs, Colo. Colorado...Mines: Bulletin, vol. 4, no. 2. Golden, Colo. Colorado Scientific Society: Proceedings, vol. 8, pp. 363-422...Denver, Colo. Colorado, University of: Studies, vol. 5, nos. 2-4, vol. 6, no. 1. Boulder, Colo. Connecticut...Bulletins, nos. 10-12. Hartford, Conn. Delaware County Institute of Science: Proceedings, vol. 3, nos...Development Company's Survey. Charleston, Kanawha County, W. Va., 1907. 28 pp., 4 pis. Gives information |
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