 | | 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 |  | | Report (volume) | | of the Leadville 1°X2° quadrangle, west-central Colorado : summary and discussion I by Alan R. Wallace...Radioactive dating-Colorado-Leadville Region. 2. Geology, Stratigraphic. 3. Geology-Colorado-Leadville Region...Appendix E. Geochronologic data listed by mining district .. ........... ............. .......... .....geochronology samples, Leadville 1°X2 o quadrangle, Colorado. III IV CONTENTS FIGURES 1. 2. 3. 4. 5. 6...of the Leadville 1°X2° quadrangle, west-central Colorado........................ 2 Map showing major geologic |  | | 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) | | 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 |  | | 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 (issue) | | The Geological Story of the Blue River Valley, Colorado, and Its Surrounding Mountains Circular 1400...The Geological Story of the Blue River Valley, Colorado, and Its Surrounding Mountains By Karl S. Kellogg...mines—The geological story of the Blue River valley, Colorado, and its surrounding mountains: U.S. Geological...the geological story of the Blue River Valley, colorado, and its surrounding mountains / by Karl S. Kellogg...978-1-4113-3966-8 (pbk.) 1. Geology--Colorado--Blue River Valley. 2. Mountains--Colorado. I. Bryant, Bruce, 1930- |  | | 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 |  | | 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 (volume) | | Intrusive Rocks ana Associated Ore Deposits in the Colorado Mineral Belt U.S. GEOLOGICAL SURVEY BULLETIN... Alaska Rm. 101,4230 University Dr. LAKEWOOD, Colorado Federal Center, Bldg. 810 MENLO PARK, California...Center, Rm. 1C402, 12201 Sunrise Valley Dr. SALT LAKE CITY, Utah Federal Bldg., Rm. 8105, 125 South State...Intrusive Rocks and Associated Ore Deposits in the Colorado Mineral Belt By Charles G. Cunningham, Charles...understand the temporal and spatial evolution of the Colorado Mineral Belt UNITED STATES GOVERNMENT PRINTING |  | 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) | | soccuron both sidesof the ColoradoPlateau (in Colorado,New Mexico, Arizona, Utah, and Nevada) and in...and (8) topaz-richporphyry Mo-W depositsof the Climax and Hendersontype. Topaz rhyolite volcanicvent...Introduction occurrencein a lava flow near Nathrop, Colorado, IN 1884 Whitman Crossdescribedtopaz, A12SiO4F2...and garnet in samplesof lithophysalrhyolite lava Colorado,lessthan4 km westof what would84 years from the...beryllium depositswere discoveredin this same district (Shawe, 1968). Since these early discoveries,Cenozoic |  | | Report (issue) | | is either the major product (as at Climax and Henderson, Colorado, and Questa, New Mexico), or is a co-...XVT XVA XWA XWI XWY ALASKA ARIZONA CALIFORNIA COLORADO GEORGIA IDAHO MAINE MISSOURI MONTANA NEVADA NEW...Steininger, R. C., 1981, Character and origin of Climax-type molybdenum deposits: Economic Geology, 75th...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 |  | | Journal (article/letter/editorial) | | asgranodiorite molybdenitesystems The sourceplutonsfor Climax, Henderson-Urad, and granitemolybdenitesystems--also...tectonicsettingat the time and Mount Emmons-Redwell Basin, Colorado, are of formation,orebodygeometry,and trace element...quartz monzonite 4, Climax, Colorado;Climax stock--graniteporphyry 5, Henderson, Colorado;Hendersongranite--graniteporphyry...e--graniteporphyry 6, Mount Emmons,Colorado;Keystonestock--graniteporphyry 7, Questa,New Mexico;Ques...a settingabovea subductionzone. (2) The dated Colorado-northern New Mexico- Texasdepositsand prospectsrange |  | | Journal (article/letter/editorial) | | increasedproductionfrom porphyry-typedeposits. The Climax minealonehas contributedapproximatelyhalf the total...has resulted in developmentof five minesof the Climax-typein the last half decade,and at least one similar...associatedsiliceousintrusives. With the exceptionof the Climax depositwhere tin, tungstenand pyrite are recovered...(eastern) Oregon-Idaho-(western) Montana, (4) Colorado-NewMexico, (5) Nevada-southern California,and...locatedin the southernRockyMountains(Urad-Henderson,Climax and Questa) and in the Interior Belt of BritishColumbia(Alice |  | 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...niteorebodiesat Red Mountain, Clear Creek County,Colorado,are relatedto a rhyolitic subvolcaniccenterof...consistof essentialquartz,K-feldspar,albite, and minor biotite. Clastic and fragmeutal textures are cronmortfeatures...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 |  | | 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 |  | | 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...Pink migmatite ____________________________ _ Biotite-muscovite quartz monzonite __________ _ Gneissic...ores-----------------------------Mine descriptions----------------------------------Wilfley-Kimberly mine __ --------________________...Consolidated mine, Eldorado and Wilson mines, Felicia Grace mine, and Champion (New York) mine---------- |  | 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...fluorite–rhodochrosite mineralization at the Sweet Home Mine occurred coeval with the final stage of magmatic...activity and ore formation at the nearby world-class Climax molybdenum deposit about 26 to 25 m.y. ago. The...Geosciences, Virginia Tech, Blacksburg, VA 24061, USA T. Pettke Institute of Geological Sciences, University...Switzerland D. Misantoni Colorado Calumet Company Inc., P.O. Box 1169, Golden, CO 80402, USA al assemblage was |  | | Journal (article/letter/editorial) | | moderateenrichmentin Nb, Rb, and F (Questa,MountHope); (2) Climax-typedeposits associated with highlydifferentiatedgranitesof...highlydifferentiatedgranitesof alkali-calcicmagma series(e.g., Climax, Urad-Henderson,Mount Emmons);and ($) alkalic depositsfound...volcanoplutonicarcsassociated with plate convergence. Climax-typedepositsare found in areasof crustalrelaxationand...intracratonicrifting could form magmasrelated to Climax-type and alkalic deposits.We proposethat the chemical...porphyrycoppers.Calc-alkalinemolybdenum depositsgradeinto Climax-typedepositsthroughthe intermediatetransitionaldeposittype |  | | 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 .......................................... |  | | Journal (article/letter/editorial) | | Vol. 20 SOCIETY OF' AMERICA MAY, 1935 No.5 COLORADO PEGMATITES KBNNBTU K. Lauons, Unioersity of Kansas...in every county 'of Colorado along the Front Range of the Rocky Mountains from Larimer County on the Wyoming...Wyoming line to Custer County in the south-centralpart of the state, and in scatteredpre-Cambrianareas...The pre-Cambrian schists and granites of Larimer County are cut by numerous pegmatite dikesl which have...exhibiting an ore mineral phaseoccur in Boulder County.3JeffersonCounty contains both tourmaline and muscovite |  | | Journal (article/letter/editorial) | | A-type, except for the Climax-type porphyries and some others in the Colorado mineral belt. By-product...monzogranite. Felsic intrusive rocks of the Climax mine are A-type and are exceptionally high in trace...stockwork-disseminated type of the Climax, Henderson, and Mt. Emmons deposits of the Colorado mineral belt, and vein...have been discovered in China (Qin, 2012). The Climax deposits contain the highest grade ore (Wallace...Chalukou Alice Arm Endako Daheishan Bingham Shimane Climax Urad Questa Jinduicheng,Shijiawan, Luming Laoneushan |  | 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 |  | | Journal (article/letter/editorial) | | example; the quartz veinsof the Bonanzadistrict, Colorado,describedby Burbank• as of moderatesulphidecontentand...him; and the ferberite4 depositsof BoulderCounty,Colorado,may belongto this class. Depositsof dolomiticzinc-leadtype...dolomiticzinc-leadtype in the Weston Pass district, Colorado, interpretedas formed at low temperaturesbut at a...: Geology and Ore Deposits of the Bonanza Mining District, U.S. Geol. Survey, Prof. Paper x69, p. 86...H. Jr.: Zoning of Ore Deposits, Leadville District, Colorado. Ecoa;. Gzo•.., vol. 29, pp. 239-240, x934 |  | | 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 |
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