 | | Journal (article/letter/editorial) | | (above). Pyrite, Alice Glory Hole, Clear Creek County. Cluster of intergrown crystals showing light...Figure 2 (right). Pyrite, Mountain Spring mine, Rico, Dolores County. Cluster of modified cubes; specimen...C*O*L*O*R*A*D*O PYRITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...Park City, Utah; Washington State; and numerous Colorado localities. Pyrite crystallizes in the isometric...Pyrite is the most common sulfide mineral found in Colorado; it is found in a wide variety of occurrences |  | Wallace, A.R., Ludington, Steve, Lovering, T.G., Campbell, D.L., Case, J.E., Grauch, V.J.S., Knepper, D.H. (1988) Leadville 1 degree x 2 degrees Quadrangle, Colorado; a pre-assessment. Open-File Report Vol. 1988 (88-74) US Geological Survey doi:10.3133/ofr8874 | Report (issue) | | GEOLOGICAL SURVEY Leadville I°x2° quadrangle, Colorado: a pre-assessment by Alan R. Wallace , Steve...standards and stratigraphic nomenclature. Denver, Colorado -Menlo Park, California CONTENTS Page Preface........... 10 3. 4. 5. Map showing tracts for Climax and porphyry-type deposits..... Map showing tracts............ 18 19 20 TABLES Table 1. 2. 3. 4. Mining districts in the Leadville quadrangle................................. Base- and precious-metal mining areas......................... 4 11 16 17 PREFACE |  | | Report (issue) | | Mendenhall, Director Bulletin 846 C THE CLIMAX MOLYBDENUM DEPOSIT COLORADO BY B. S. BUTLER and J. W. VANDERWILT...____-___-___--______--________ Previous geologic work in the district..______________________________ Page 195 196...map and sections of Climax molybdenum district. In pocket 24. A, Climax district in winter; B, Panorama...Panorama of a part of Mosquito Range including Climax district.._.______-__-___ 198 25. Recrystallized sc...--_---------_222 32. Detailed map of Climax molybdenum district..__________ In pocket 33-37. Cross sections |  | | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma District, Central Colorado: the porphyry molybdenum–fluorine...hrosite–fluorite in the Sweet Home Mine, Alma District, Colorado were originally mined for silver starting...For the last 13 years up until 2004, however, the mine has produced world-class rhodochrosite specimens...deposit is interpreted as a single pulse variant of a Climax-type hydrothermal system. Evidence for this includes...age of the end stages of mineralization of the Climax molybdenum deposit approximately 7.5 km to the | | | Journal (article/letter/editorial) | | Sweet Home rhodochrosite specimen mine, Alma District, Central Colorado: the porphyry molybdenum–fluorine...hrosite–fluorite in the Sweet Home Mine, Alma District, Colorado were originally mined for silver starting...For the last 13 years up until 2004, however, the mine has produced world-class rhodochrosite specimens...deposit is interpreted as a single pulse variant of a Climax-type hydrothermal system. Evidence for this includes...age of the end stages of mineralization of the Climax molybdenum deposit approximately 7.5 km to the |  | | Journal (issue) | | Newsletter $6.00 Fibrous Malachite from the Mindingi Mine Katanga, Democratic Republic of the Congo Tony Nikischer...fibrous malachite from the Mindingi Mine in the Kambove District of Katanga began to appear in the specimen...ten {I 0) years ago (see figure J ). Although the mine was first worked superficially in the 1930s for...DRC as well (see figure 2). Today, the Mindingi Mine continues to produce wonderful malachite specimens...specimenand image. Nickel Laterite From the Tiebaghi Mine, New Caledonia Bob Werner werner@lcturbonet.com |  | Church, S.E., Wilson, S.A., Vaughn, R.B., Fey, D.L. (1994) Geochemical and lead-isotopic studies of river and lake sediments, upper Arkansas River basin, Twin Lakes to Pueblo, Colorado. Open-File Report Vol. 1994 (94-412) US Geological Survey doi:10.3133/ofr94412 | Report (issue) | | of river and lake sediments, upper Arkansas River basin, Twin Lakes to Pueblo, Colorado by S.E. Church................................................. Mining History and Production ................................................................ Chaffee County .................................................................................. Custer County .......................................................Fremont County .............................................................................. Lake County |  | | Report (issue) | | INSTITUTE OF MINING & TECHNOLOGY CAMPUS STATION SOCORRO, NEW MEXICO NEW MEXICO INSTITUTE OF MINING Sc TECHNOLOGY............................................... 7 Mining .......................................................................... Petaca mining district, Rio Arriba County ...................................25 25 25 Page Other occurrences, Rio Arriba County ............................................................................... 26 Bromide mining district .......................................... |  | | 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 |  | | Journal (article/letter/editorial) | | 0.75 inch on edge, from the Henderson mine, Clear Creek County. Figure 2 (right). Green fluorite encrusted...Mountain Wilderness area near Columbine Lake, La Plata County; largest crystal measures 1.25 inches on... FLUORITE BARBARA L. MUNTYAN Ouray County Museum Ouray, Colorado 81427 Mineral photographs by John R...locations in Mexico; in Elmwood, Smith County, Tennessee, and in Hardin County, Illinois, in the United States;...eastern Russia. It also occurs in many localities in Colorado, where it is found in colors ranging from pale |  | | Journal (issue) | | of float copper was found in southern Houghton County and the larger mass was recovered a few miles west...Molybdenite Climax Mine, Lake County, Colorado Bob Werner werner@lcturbonet.com The Climax Mine, located...located in Lake County, Colorado (Fig. I), is perhaps the world's largest deposit of molybdenum (Mo) metal...as "molybedamnite" or "molybedumdumite". The Climax Mine has operated on and off for over I 00 years and...expectation would be in vain. Specimens from the Climax Mine typically put real meaning to the term "aesthetically |  | | Report (issue) | | Ore Deposits of the· Kokomo-Tenmile District, Colorado By M. H. BERGENDAHL and A. H. KOSCHMANN . I...PAPER 652 Prepared in cooperation with the Colorado Mining Industrial Development Board .. 1\ UNITED...ores-----------------------------Mine descriptions----------------------------------Wilfley-Kimberly mine __ --------________________...Consolidated mine, Eldorado and Wilson mines, Felicia Grace mine, and Champion (New York) mine----------...Page PLATE 1. Geologic map of Kokomo-Tenmile district------------------------------------------------------ |  | | Journal (issue) | | Deposit, Nye County, Nevada Wilson D. Michell 99 Geology of the Ropes Gold Mine, Marquette County, Michigan...MARCH-APRIL, 1945 OXIDATION IN A MOLYBDENITE NYE COUNTY, NEVADA. WILSON No. 2 DEPOSIT, D. MICHELL. ABSTRACT...located in the Liberty Mining District about 25 miles north of Tonopah in Nye County, Nevada. The deposit...portion of the orebody contains abundant ocherous limonite, some ferrimolybdite (Fe,O,-3MoO,:71% H,O),’ residual...residual molybdenite. Relatively small amounts of limonite, and also presumably some ferrimolybdite, have |  | | Report (issue) | | section --4.--Map showing relationship between Climax stock, Twinridge pluton, Halfpint anticline, and...anomalies to Climax stock, Twinridge pluton, Halfpint anticline, alteration patterns, and past mining and mineral...above ground surface showing anomalies over the Climax stock, Twinridge pluton, and highs along the Halfpint...data suggest that the Twinridge pluton and the Climax stock, a much larger exposure of granitic rocks...with exposures of the Twinridge pluton and the Climax stock; (2) similar mineral composition of the two |  | | Report (volume) | | --------------------------- 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 __________ -------- |  | | 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 (issue) | | Geology in the Leadville 30-Minute Quadrangle, Colorado GEOLOGICAL SURVEY PROFESSIONAL PAPER 726-C...Geology in the Leadville 30-Minute Quadrangle, Colorado By OGDEN TWETO and J. E. CASE GEOPHYSICAL FIELD...geophysical data on the most productive part of the Colorado mineral belt UNITED STATES GOVERNMENT PRINTING...of the Leadville 30-minute quadrangle, central Colorado.... -----------------------------------------...____________ ln pocket FIGURE 1. Index map of Colorado __________________________________________________ |  | | Report (volume) | | ____ Molybdenite_____________________________ Colorado ____________________________ New Mexico _____...Railroad Creek near Lake Chelan, Okanogan County, Wash.; B, From a prospect near Lake Tahoe, Calif______________________...porphyry (?) carrying molybdenite along veinlets, Climax, Colo______ _________ III. A, Radial spherule of...Creek Mountains, 4 miles south of Gold Hill, Tooele County, Utah; B, Sericitized quartz porphyry breccia with...(?) in granite, George Fast's mine, near La Trinidad, Sahuaripa district, Sonora, MexicoVII. Ends of radial |  | | Journal (article/letter/editorial) | | Mineral Explorationwith SkylabPhotographyin Central Colorado GARY PROST Amoco Production Company, 1670 Broadway...analyzedto determinethosefeaturesassociated with known mining districtsthat are recognizable from space.This...photographs,explains the a remote-sensing in the Colorado mineral belt, Nicolais (1974) noted photogeologic...lineaments, are considered included much of the Colorado mineral belt, several the mostpromisingareasfor...photographs obtainedas part of the Skylabearth reKnown mining districts within the survey area sourcesprogram |  | | Report (issue) | | Center, Denver, Colorado 80225 SUMMARY OF THE GEOLOGY AND PHYSICAL PROPERTIES OF THE CLIMAX STOCK, NEVADA... CONTENTS Page Abstract Introduction 1 : - - , Climax stock " *-. '" General statementGrattodiorlte ~~...Faults >;-1, --^; /Joints : ; Drill holes in the Climax stock Pile Driver tunnel complex General statement...Figure 1. : ' 2a< 2b* Index nap showing location of Climax stock in Area 15, Nevada Test , site ' Geologic...Table 1. Average modal analyses for rocks of the Climax stock 2. Average chemical composition in weight |  | | Report (issue) | | MOUNTAINS WILDERNESS STUDY AREA (CDCA-348), RIVERSIDE COUNTY, CALIFORNIA SUMMARY REPORT By Robert E. Powell...California Desert Conservation Area, Riverside County, California. SUMMARY Geologic and geochemical...in the northern Chuckwalla Mountains, Riverside County, Calif, (fig. 1). The area is split into two parts...molybdenite, galena, pyrite, fluorite, hematite, limonite, copper carbonate minerals, and dendritic manganese...mineralization commonly observed around granite-molybdenite (Climax-type) systems in the western United States (Wallace |  | | Journal (article/letter/editorial) | | MICANITE, COLORADO E. Wtu. Herwucn, UniversityoJ Michigan,Ann Arbor, Mi.chigan. ABsrRAcr The Climax pegmatite...pegmatite of the Micanite district in Colorado contains unusually large masses of cordierite, which is altered...IurnooucttoN The Micanite pegmatite district iies acrossthe Park-Fremont County line in south-centralColorado...Sterrett (1923,p.53), who recognizedcordieritein the Climax deposit. The pegmatite was studied by the writer...they were reopened by the Colorado Feldspar Company of Canon City, Colorado, and moderate quantities of |  | | Report (issue) | | About 200 km northeast of the quadrangle in Gila County, Ariz., the Dripping Spring Quartzite, one formation...deposits from Ajo to deposits in the MiamiInspiration district including the Casa Grande, Sacaton, and Poston...body contains phyllic alteration. The New Cornelia mine produced about 45,360 tonnes of copper per year...and the mine is currently (1985) closed. Phelps Dodge Corporation planned to expand the mine so that...and a porphyry-related skarn deposit. North of the mine a composite Late Cretaceous quartzmonzonite-granodiorite |  | | Journal (article/letter/editorial) | | ECONOMIC GEOLOGISTS AND THE AMERICAN INSTITUTE OF MINING AND METAL- LURGICALENGINEERS, NEW YORK MEETING...cassiterite and columbite-tantalite. Prospecting and mining have been particularly active since World War II...in zonedpegmatitescanbe appliedto prospectingand mining of pegmatite depositsin these two areas of South...consistsof brecciated greisen and quartz veined with limonite, and torbenite is present in places. SOCIETY...company,Territory EnterprisesLtd., is developingand mining depositsat Rum Jungle itself and other companiesand |  | LeAnderson, P. James, Schrader, E.L., Brake, Sandy, Kaback, Dawn S. (1987) Behavior of molybdenum during weathering of the Ceresco Ridge porphyry molybdenite deposit, Climax, Colorado and a comparison with the Hollister deposit, North Carolina. Applied Geochemistry, 2 (4) 399-415 doi:10.1016/0883-2927(87)90024-2 | Journal (article/letter/editorial) | | Ceresco Ridge porphyry molybdenite deposit, Climax, Colorado and a comparison with the Hollister deposit...Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO 80401, U.S.A. E....Department of Geology and Geological Engineering, Colorado School of Mines, Golden, CO 80401, U.S.A. and...of the Ceresco Ore Body in Ceresco Ridge, Climax, Colorado. The deposit contained sufficient pyrite to...of secondary minerals, where observed prior to mining of the ridge, was ferrimolybdite --) jarosite -- |
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