 | | Journal (article/letter/editorial) | | pp. 3–37 Henderson Porphyry Molybdenum System, Colorado: I. Sequence and Abundance of Hydrothermal Mineral...California 94305-2115 Abstract At Henderson, Colorado, 12 rhyolitic stocks of Oligocene age crystallized...Moderate-temperature sericitic assemblages (including topaz with pyrite or magnetite and sericite with pyrite...the stock. Na- and Na-K-feldspars (± K-feldspar ± topaz ± micas) are members of some assemblages of the...and high-temperature alteration-mineralization by mine geologists and collaborators (Shannon et al., 1982; |  | 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...The Urad and Hendersonstockworkmolybdeniteorebodiesat Red Mountain, Clear Creek County,Colorado,are relatedto...specificallyrelated to different intrusiverocksof the complex. The Urad orebodywas depositedfirst and at shallowdepth. The...within a mile of the north-northeast-trendingBerthoud Pass fault. This fault is the major structural element...constitutethe buried stock are, from oldest to youngest,the Urad porphyry,the Primos porphyry,and the Hendersongranite |  | | 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...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...Y., U.S. A. 19672 (1975) Henderson Climax Colorado 1918 400,000,000a 42,000 American Metal Climax |  | | Journal (article/letter/editorial) | | 39–72 Henderson Porphyry Molybdenum System, Colorado: II. Decoupling of Introduction and Deposition...hydrothermal mineral assemblages developed at Henderson, Colorado, as 12 rhyolitic stocks of Oligocene age were...respect to topaz during high-temperature silicic and intense potassic alteration, but topaz precipitated...suites of assemblages after further fluid evolution. Topaz formed in certain less intense potassic, transitional...fluid again became undersaturated with respect to topaz. Because fluids associated with sericite-pyrite |  | | Journal (article/letter/editorial) | | 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...monzonite 4, Climax, Colorado;Climax stock--graniteporphyry 5, Henderson, Colorado;Hendersongranite--graniteporphyry |  | | Journal (article/letter/editorial) | | Deposit, Colorado ALEXANDERJ. GVNOW, Departmentof GeologicalSciences,Universityof Colorado,Boulder, Colorado80309...MVNOZ Departmentof GeologicalSciences,Universityof Colorado,Boulder, Colorado80309 Abstract Anomalously high...the Henderson molybdenite deposit in Clear Creek County, Colorado. Twelve-element microprobe analysesof...molybdenite deposit in Clear (1974),Bailey (1977),and Lam•trreand Hodder Creek County, Colorado, is located approximately...youngest known major intrusion at the Henderson mine. /vw Alteration Ysp Ysp Pattern The alteration |  | | 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...(2) a geochemical (Mn, W, F) and mineralogical (topaz, fluorite, hubnerite, greisen muscovite) signature...the nearby area; (4) a small pegmatite within the mine with an age (25.9±0.3 Ma) coincident with mineralization | | | 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...(2) a geochemical (Mn, W, F) and mineralogical (topaz, fluorite, hubnerite, greisen muscovite) signature...the nearby area; (4) a small pegmatite within the mine with an age (25.9±0.3 Ma) coincident with mineralization |  | | Report (issue) | | the major product (as at Climax and Henderson, Colorado, and Questa, New Mexico), or is a co- or byproduct...XVT XVA XWA XWI XWY ALASKA ARIZONA CALIFORNIA COLORADO GEORGIA IDAHO MAINE MISSOURI MONTANA NEVADA NEW...of the Pine Grove-B la*n Mountain area. Beaver County, Utah: U. S. Geological Survey Open-File Report...wah wah Mountains, Beaver County, Utah (abstract): American Institute of Mining, Metallurgical and Petroleum...deposits of the Mount Antero region, Chaffee County, Colorado: U.S. Geological Survey Bulletin 982-D, p |  | | Journal (article/letter/editorial) | | nitesof alkali-calcicmagma series(e.g., Climax, Urad-Henderson,Mount Emmons);and ($) alkalic depositsfound...',. ,'x27'-'. l:] "-- r-•.. / -u 45. 47. URAD-HENDERSON 48. CLIMAX RED MOUNTAIN REDWELL BASIN...BASIN MT. EMMONS 19. 21. 23. ( [ SERB CREEK LUCKY SHIP RED BIRD ENDAKO SALAL BOSS MOUNTAIN MOUNT COPELAND...SILVER OIKE BALD BUTTE CANNIVAN GULCH IMA THOMPSON CREEK WHITE CLOUD LITTLE FALLS CUMO MAJUBA HILL BUCKINGHAM...GULCH 15. 16. 17. 18. , / AJAX TIDEWATER ROUNDY CREEK KITSAULT BELL MOLY '[rsZ- -,-• -, ' ,,-., 55 |  | | Journal (issue) | | Julius Weber Mamaroneck, New York COLORADO ISSUE #2 Articles Colorado locality index.............................. 323 by B. L. Muntyan What’s new in Colorado minerals? ...................................... Famous mineral localities: the Home Sweet Home mine ..................................................339 by M. I. Jacobson The San Juan Mountains of Colorado ..................................349 by J. A...10 cm tall, from the Yucca Hill claim, Park County, Colorado. Richard A. Kosnar specimen; photo by John |  | | 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 __________ -------- |  | Mercer, Celestine N., Hofstra, Albert H., Todorov, Todor I., Roberge, Julie, Burgisser, Alain, Adams, David T., Cosca, Michael (2015) Pre-Eruptive Conditions of the Hideaway Park Topaz Rhyolite: Insights into Metal Source and Evolution of Magma Parental to the Henderson Porphyry Molybdenum Deposit, Colorado. Journal of Petrology, 56 (4) 645-679 doi:10.1093/petrology/egv010 | Journal (article/letter/editorial) | | Article Pre-Eruptive Conditions of the Hideaway Park Topaz Rhyolite: Insights into Metal Source and Evolution...to the Henderson Porphyry Molybdenum Deposit, Colorado Downloaded from http://petrology.oxfordjournals...Laboratory, US Geological Survey, Denver, CO 80225, USA, 2Center for Food & Drug and Safety & Applied Nutrition...Food & Drug Administration, College Park, MD 20740, USA, 3ESIA-Ticoman, Instituto Politecnico Nacional, D...porphyry Mo deposit. Located within the Colorado Mineral Belt, USA, Henderson is the second largest Climax-type |  | | Journal (article/letter/editorial) | | unlike C1, is incorporatedin greisenminerals(mainly topaz, fluorite,and micas)and that mineral stabilitiescan...shallowporphyrydeposits, suchasHenderson,Colorado,boilingcauses aqueousfluidsto pass directlyfrom the K-feldsparore...um /teposits,especiallyClimax and Hendersonin Colorado,is perhapsbestclassified asgreisen(seereview by... 1978). In what follows, I havetakenHenderson,Colorado,astypicalof what superfluously might be calleda...usage)or greisendepositsincludeBeus suchas fluorite,topaz,and micas,whereaschlorine (1962, 1967), Shcherba |  | | Journal (article/letter/editorial) | | Tourmaline on quartz, Cruzeiro mine, Minas Gerais, Brazil. Los Angeles County Museum of Natural History specimen...Pelt photo. MarcWApril: Beryl and calcite, La Pita mine, Maripi Boyacii, Columbia. Cal Graeber, Leonard...Quartz (amethyst), near Badger Creek, north of Coaldale, Fremont County, Colorado. Dave Bunk specimen, Jeff...(Herkimer “diamonds’’), Treasure Mountain Diamond mine, near Little Falls, New York. Uli Bahmann specimen...SepteniberlOctober: Gold, Smuggler Union mine, Telluride district, Colorado. Colorado School of Mines Museum specimen |  | 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). |  | Burt, Donald M., Sheridan, Michael F., Bikun, James V., Christiansen, Eric H. (1982) Topaz rhyolites; distribution, origin, and significance for exploration. Economic Geology, 77 (8) 1818-1836 doi:10.2113/gsecongeo.77.8.1818 | Journal (article/letter/editorial) | | ArizonaState University,Tempe,Arizona85287 Abstract Topaz rhyolitesare fluorine-richalkaline siliciclavasand...shallowintrusivesthat are characterizedby the presenceof topaz(A12SiO4F2) in gascavities,commonlyassociated with...soccuron both sidesof the ColoradoPlateau (in Colorado,New Mexico, Arizona, Utah, and Nevada) and in...(carbonaterocks) and water tableswere presumablyhigh. Most topaz rhyolite lavasare not associated wth volcanogenicmineralization...nonreactive,and water tablescould have been low. Topaz rhyolitesof both the productiveand nonproductivetype |  | Lüders, Volker, Romer, Rolf L., Gilg, H. Albert, Bodnar, Robert J., Pettke, Thomas, Misantoni, Dean (2009) A geochemical study of the Sweet Home Mine, Colorado Mineral Belt, USA: hydrothermal fluid evolution above a hypothesized granite cupola. Mineralium Deposita, 44 (4) 415-434 doi:10.1007/s00126-008-0221-3 | Journal (article/letter/editorial) | | geochemical study of the Sweet Home Mine, Colorado Mineral Belt, USA: hydrothermal fluid evolution above...Abstract Deposition of quartz–molybdenite–pyrite–topaz– muscovite–fluorite and subsequent hübnerite and...fluorite–rhodochrosite mineralization at the Sweet Home Mine occurred coeval with the final stage of magmatic...that the early-stage quartz–molybdenite–pyrite–topaz–muscovite–fluorite minerEditorial handling: B. Lehmann...Geosciences, Virginia Tech, Blacksburg, VA 24061, USA T. Pettke Institute of Geological Sciences, University |  | 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) | | selected Laramide-Tertiary granitoid stocks in the Colorado Mineral Belt and their bearing on the origin of...Geology, University of Vermont, Burlington, VT 05405, USA 2 Branch of Isotope Geology, U.S. Geological Survey...Denver, CO 80225, USA Abstract. Quartz phenocrysts from 31 granitoid stocks in the Colorado Mineral Belt...without meteoric water influx. Introduction The Colorado Mineral Belt (COMB), a site of extensive Late...Survey, M.S. 905, Federal Center, Denver, CO 80225, USA Offprint requests to: J.L. Hannah * Present address: |  | | Book | | Published by Society of Mining Engineers of The American Institute of Mining, Metallurgical, and Petroleum... Copyright © 1978 by the American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc. ...SPECIFIC EXAMPLES ... BC Moly (Lime Creek), British ree : The Urad-Henderson Molybdenite Deposits. Boss...Deposits in the Sreia ity of # LE65 BC Moly (Lime Creek). ; eee et a 54 ¢ General Geologic Map of the BC...x E67 55a ¢ Generalized Geologic Section of the Urad-Henderson Ore Desc 55b © Generalized Geologic Section |  | | Journal (issue) | | Institution feature articles Mordenite at Wolf Creek Pass............................... 272 by Marvin...Marvin Hanner Additions to the Ore Mineralogy of Colorado....................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................collector and dealer is be coming less and less clear. A few people m ake their living 100% through dealing...had achieved considerable fame, and the right to mine diopside was obtained that year by G eorge L. English |  | | Journal (article/letter/editorial) | | Molybdenum distribution in Precambrian rocks of the Colorado Mineral Belt [Mineralium Deposita 22, 47- 52 (1987)]...Denver, CO 80225 USA Department of Geology, University of Vermont, Burlington, VT 05405 USA Lehmann is to...compositional range of Proterozoic rock samp!es from the Colorado Mineral Belt (Lehmann 1987). Although some Precambrian...initially Mo-enriched Proterozoic basement in Colorado. We disagree, however, with Lehmann's conclusions...associated porphyry molybdenum deposits in the Colorado Mineral Belt. Lehmann attributes economic molybdenum |  | | Journal (article/letter/editorial) | | University, Tempe, Arizona 85287, U.S.A. Ansrnacr Topaz-rich ongonite and topazite dikes cut rocks ofthe...main ongonite dike, composed dominantly of quartz, topaz, and sodic plagioclase,is mineralogically similar...topazite dikes, composed predominantly of quartz and topaz, are mineralogically and compositionally similar...similar to topazite from the New England district, New South Wales, Australia. The two types ofdikes in the...Alder Group rocks along dike maryins, and dike topaz with an igneous texture and geochemical signature |  | | 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 edge;... 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 |
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