 | Wallace, S. R., MacKenzie, W. B., Blair, R. G., Muncaster, N. K. (1978) Geology of the Urad and Henderson molybdenite deposits, Clear Creek County, Colorado, with a section on a comparison of these deposits with those at Climax, Colorado. Economic Geology, 73 (3) 325-368 doi:10.2113/gsecongeo.73.3.325 | Journal (article/letter/editorial) | | ClearCreekCounty,Colorado,with a Sectionon a Comparison of TheseDepositswith Thoseat Climax, Colorado STEWARTR...Hendersonstockworkmolybdeniteorebodiesat Red Mountain, Clear Creek County,Colorado,are relatedto a rhyolitic subvolcaniccenterof...within a mile of the north-northeast-trendingBerthoud Pass fault. This fault is the major structural element...Complex;the rest was in the Sih-er Plmne Granite. The Urad mine, now worked out, producedabout 14 million tons of...remarkablysimilar in many respectsto thoseat Climax, Colorado, but there are some notable differences. The abundance |  | | Journal (article/letter/editorial) | | Geology Vol. 99, pp. 3–37 Henderson Porphyry Molybdenum System, Colorado: I. Sequence and Abundance...Stanford, California 94305-2115 Abstract At Henderson, Colorado, 12 rhyolitic stocks of Oligocene age crystallized...tops are 1 km below the surface of Red Mountain: Henderson (oldest), Seriate, and Vasquez (deepest and youngest)...(including topaz with pyrite or magnetite and sericite with pyrite or magnetite) only locally exhibit...low-temperature assemblages, which extended higher above Henderson than Seriate. Prior to that time, the region where |  | | Journal (article/letter/editorial) | | (eastern) Oregon-Idaho-(western) Montana, (4) Colorado-NewMexico, (5) Nevada-southern California,and...productivedepositsare locatedin the southernRockyMountains(Urad-Henderson,Climax and Questa) and in the Interior Belt of...Rate (t.p.d.)x BritishColumbia 1967 46,000,000 Mine Alice (B. C. Molybdenum) 8,000 Company British...British Columbia,Canada (Noranda Subsidiary) Urad- Colorado 13,000,000 5,000 303,000,000 30,000 American...New York, N.Y., U.S. A. 19672 (1975) Henderson Climax Colorado 1918 400,000,000a 42,000 American |  | Soulliere, S.J., Toth, M.I., Bankey, V.L., Smith, S.M., Pitkin, J.A., Cookro, T.M., Robinson, Roberts L.N., Molnia, C.L., Wandrey, C.J., Law, B.E., Spencer, C.W., Barker, C.E., Dersch, J.S. (1996) Resource potential and geology of the Routt National Forest and the Middle Park Ranger District of the Arapaho National Forest, Colorado. Open-File Report Vol. 1996 (96-82) US Geological Survey doi:10.3133/ofr9682 | Report (issue) | | Unconsolidated Deposits ...................... Colorado Mineral Belt ................................................................. Hahns Peak Mining District ...................................... Cam............................................... Henderson-Urad Molybdenum Area ...........................Bear Creek-Lone Pine Creek Anomalous Area .......................... Red Canyon-Crystal Mining District...Beaver Creek Area (Farwell Mining District) ........................... Dailey (Atlantic) Mining District |  | | Journal (article/letter/editorial) | | (Seedorff, 1988; Carten et al., 1988a, 1993). At Henderson, Colorado, differences in the intensity of mineralization...addressed for the Goat Hill orebody of the Questa mine, New Mexico. † Corresponding author: email, p_s_ross@hotmail...Regional Geology The Questa mine is located in north-central New Mexico, USA, in the Taos Range of the...the Sangre de Cristo Mountains. In the mine vicinity, the Tertiary Latir volcanic field overlies a Proterozoic...foliation Stream Fault, dashed where inferred Mine shaft Contact, dashed where inferred Sulfur Gulch |  | | Journal (article/letter/editorial) | | A-K-F plots I can characterizepotassic, quartz-sericite, argillic,andsilicicalterationassemblages andleadto...developchemicalfingerprintsto the pluton(Thompson Creek),marginalannularbodrecognizedifferent alterationassemblages...model for molybdenitedepositsasso- (Little Boulder Creek and Cannivan). Granodiorite ciatedwith graniticsourcerocks...molybdenitesystems The sourceplutonsfor Climax, Henderson-Urad, and granitemolybdenitesystems--also showsignificant...tectonicsettingat the time and Mount Emmons-Redwell Basin, Colorado, are of formation,orebodygeometry,and trace element |  | | Journal (article/letter/editorial) | | Homestake Porphyry Intrusive Complex, New World District, Montana TODD W. JOHNSON† 550 North McCarran Blvd...Nevada 89557 Abstract The Miller Creek, Homestake, and Daisy Pass resources contain 7,406,260 metric...intrusive complex within the New World district near Cooke City, Park County, in south-central Montana. The Homestake...Homestake replacement zones but is absent at Miller Creek. Replacement zones within the Homestake resource...subhorizontal replacement zones at Miller Creek and Daisy Pass are hosted by dolomitic limestone of the |  | | Report (issue) | | constructed from the bits and pieces exposed in the Colorado mineral belt and the San Juan volcanic field....matching the exposed mineralized rocks of a mining district with corresponding parts of a model (Briggs...Steven, 1971) of the southern San Juan Mountains of Colorado. The Model The porphyry-metal edifice 2 is an...showing the parts of edifices exposed in the Crater Creek Platoro caldera area field. -3- of the'San Juan...a metalliferous hydrothermal fluid (Hemley and Jones, 1964) that separated from the magma in response |  | | Journal (article/letter/editorial) | | Geology Vol. 99, pp. 39–72 Henderson Porphyry Molybdenum System, Colorado: II. Decoupling of Introduction...hydrothermal mineral assemblages developed at Henderson, Colorado, as 12 rhyolitic stocks of Oligocene age...Because fluids associated with sericite-pyrite alteration at Henderson were unusually saline (mostly 29–36...sericitic alteration by cooling through the K-feldspar-sericite buffer at nearly constant aK+/aH+. Indeed, halite-bearing...assemblages that formed above intrusive centers at Henderson resemble assemblages in other Climax-type porphyry |  | | Report (issue) | | 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 -- |  | | Report (issue) | | ................................. 3 Rocky Bar District—43 ................................................................................. 3 Devil’s Creek Prospect—46 .......................................................... 4 Liver Peak (a.k.a. Goat Creek)—4 .................................................................................... 7 Spring Creek—36 ......................................................................................... 8 Henderson Gulch—11 .................................... |  | | 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...the nearby area; (4) a small pegmatite within the mine with an age (25.9±0.3 Ma) coincident with mineralization...Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA e-mail: pbartos@mines | | | 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...the nearby area; (4) a small pegmatite within the mine with an age (25.9±0.3 Ma) coincident with mineralization...Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden, CO 80401, USA e-mail: pbartos@mines |  | | Report (issue) | | Montezuma District of Central Colorado Molybdenite in the Montezuma District of Central Colorado By George...--····-----Distribution of molybdenite in the district....... SummarY-----·------·--·---------------...Index map of central and western Colorado, showing the Montezuma district in relation to the 2. 3. 4. 5... 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. Colorado mineral belt·-··----···----··-···------------...showing principal geologic elements of the Montezuma district... ---------····----···--·······--··--······-·--·· |  | Alford, Lee, Gysi, Alexander P., Hurtig, Nicole C., Monecke, Thomas, Pfaff, Katharina (2020) Porphyry-related polymetallic Au-Ag vein deposit in the Central City district, Colorado: Mineral paragenesis and pyrite trace element chemistry. Ore Geology Reviews, 119. 103295 doi:10.1016/j.oregeorev.2019.103295 | Journal (article/letter/editorial) | | polymetallic Au-Ag vein deposit in the Central City district, Colorado: Mineral paragenesis and pyrite trace element...polymetallic AuAg vein deposit in the Central City district, Colorado: Mineral paragenesis and pyrite trace element...polymetallic Au-Ag vein deposit in the Central City district, Colorado: Mineral paragenesis and pyrite trace element...Department of Geology and Geological Engineering, Colorado School of Mines, 1516 Illinois Street, Golden...submitted to Ore Geology Reviews 1 ABSTRACT The Colorado Mineral Belt is a ~500 km long segment of calc-alkaline |  | | Report (issue) | | 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...hornblende gneiss ____________ _ Quartzite at Coal Creek ________________ _ Igneous rocks _____________________________...Quartz diorite and associated hornblendite_ Boulder Creek granite _________________ _ Pikes Peak granite |  | | Journal (article/letter/editorial) | | Deposit, Colorado ALEXANDERJ. GVNOW, Departmentof GeologicalSciences,Universityof Colorado,Boulder, Colorado80309...MVNOZ Departmentof GeologicalSciences,Universityof Colorado,Boulder, Colorado80309 Abstract Anomalously high...high fluorine values have been found in biotite, sericite, and spessartine garnet associatedwith the various...alteration sequencesat the Henderson molybdenite deposit in Clear Creek County, Colorado. Twelve-element microprobe...and that the lowest fluorine values are found in sericite from the outer zone of pervasive sericitic alteration |  | | Journal (article/letter/editorial) | | MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological...vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...Wall-rock alterationcharacteristicallyis quartz-sericite-pyrite,grading laterally outward into rocks affectedby...pyroxmangite,calcite,sericite,and fluorite. At the Ute-Ulay mine, the largest producerof the district, titis assemblagehas...massiverhodochrosite'and Id, late quartz-carbonate-fluorite.On a district-wide scale,the quartz-basemetal assemblage showsa |  | | Report (issue) | | Bulletin 846 C THE CLIMAX MOLYBDENUM DEPOSIT COLORADO BY B. S. BUTLER and J. W. VANDERWILT WITH A...PRODUCTION, METALLURGY, AND DEVELOPMENT BY CHARLES W. HENDERSON Contributions to economic geology, 1933, Part...____-___-___--______--________ Previous geologic work in the district..______________________________ Page 195 196...sections of Climax molybdenum district. In pocket 24. A, Climax district in winter; B, Panorama of a part...part of Mosquito Range including Climax district.._.______-__-___ 198 25. Recrystallized schist----------------------- |  | | 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 |  | | 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) | | 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....Idaho Springs formation --______________ Boulder Creek granite____..________________ _ Caribou stock__...Uranium-bearing lead-silver veins___________________ Mine descriptions_____________________________________________...mines______________ ____________________ _ Caribou mine,_____--_--_____________________________ No Name |  | | Journal (article/letter/editorial) | | Hydrothermal Features in the Henderson Porphyry MolybdenumDeposit, Colorado RICHARDB. CARTEN,*ENNISP. GERAGHTY...mineralizedintrusions,e.g., nine principal levels in the mine. Level plans and major and trace element chemistryof...al., 1976). Urad porphyryhosts the much larger Henderson deposit that is estimatedgeologicallyto contain800...hydrothermalalteration. Individual determinations (K/Ar--sericite, alkali feldspar, whole rock; fissiontrack--zircon)...include Depth ofemplacement Intrusions in the Urad-Henderson systemhave been rotated southeast,15ø to 25 ø |  | | Report (issue) | | . . ALAMANCE COUNTY 5 5 Pyrophyllite ...... f .......... 5 ALEXANDER COUNTY ................. 9 ALLEGHANI COUNTY 1± Manganese ....... f 11 Barite , 11 Copper . 11 ASHE COUNTY. . . . Copper...Staurolite AVERY COUNTY . . ......... 13 13 13 . 13 Iron and Epidote BUNCOMBE COUNTY Garnet ...........13 Moonstone and Associated Minerals 15 BURKE COUNTY 15 Corundijin 15 Itacolumite 15 Toiirmaline...Amethyst f . , 4 .18 CABARRUS COUNTY 18 Minerals of the Cabarms County Mines 18 CALDWELL COUNT! 18 Pyrite |  | | 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 __________ -------- |
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