 | | Journal (article/letter/editorial) | | at the Empress Josephine mine, Kerber Creek district, Saguache County, Colorado, remains the only described...analysis of material from the May Day mine, La Plata district, Colorado, confirms the above composition. Stuetzite...analysis locality and the Golden Fleece mine, Lake City, Hinsdale County, Colorado. INrnooucrrox Stuetzitewas...presenceof a binary phase with the compositionof hessite(AgzTe) and a secondphasevariously assignedthe formulae...material from the Empress Josephine mine, Kerber Creek district, Colorado, and who supplied Prof. R. D. Georgewith |  | | Journal (article/letter/editorial) | | Geologyand.Mi'neralogy, Unilersity of Colorado,Boulder, Colorado. In reply to L. J. Cabri's commentsregardingmy...stuetzitz-petzite-hessite. the Golden Fleece mine, Lake City, Hinsdale County, Colorado, ate not compatible...obvious error. The presenceof the tie Iine between hessite and sylvanite precludesboth associations,and as...Kiukkola and Wagner (1957) between Ags-*Tesand AgzTe (hessite)representsa new and welcome addition to mineralogic...three phase assemblagestuetzite (Ag5-*Te)-petzite-hessite from breakdown of a gold-rich solid solution of |  | | Report (volume) | | BULLETIN 4=78 GEOLOGY AND ORE DEPOSITS NEAR LAKE CITY, COLORADO BY JOHN DUER IRVING AND HOWLAND BANCROFT........................................ Official mining districts.............................................. Hinsdale volcanic series........................................... Lake City district............................................ ^......... Hinsdale volcanic series......................................................... Ore deposits of Lake City district....................................... The |  | | Report (issue) | | 61 Total 101.6 99.8 100.00 (1) Campbell mine, Arizona, USA; by electron microprobe. (2) Ashley deposit...in gold ores. Association: Tellurobismuthite, hessite, altaite, calaverite, melonite, petzite. Distribution:...Campbell mine, Bisbee, Cochise Co., Arizona, and the Golden Fleece mine, Lake City district, Hinsdale Co...., Colorado, USA. From the Ashley deposit, Bannockburn Township, Ontario, Canada. At the Yokozuru mine...mine, north Kyushu, Japan. In the Champion Reef mine, Kolar Gold Fields, Karnataka, India. From Kambalda |  | | Report (issue) | | 8.45 Z=7 X-ray Powder Pattern: May Day mine, Colorado, USA. 2.16 (100b), 2.55 (80b), 3.03 (70), 2.62...51 Total 99.7 99.1 100.00 (1) Red Cloud mine, Colorado, USA; by electron microprobe, corresponding to...to Ag4.76 Te3.00 . (2) Bisbee, Arizona, USA; by electron microprobe, correspnding to (Ag5.41 Cu0.02 )Σ=5...with other tellurides Association: Sylvanite, hessite, altaite, petzite, empressite, tellurium, gold...Island, Lake Temagami, Ontario; and at Lindquist Lake, Quebec, Canada. In the USA, in Colorado, at the |  | | Journal (article/letter/editorial) | | MultistageVein Ores of the Lake City District, Western San Juan Mountains,Colorado John,• F. SL^CK U.S. Geological...Polymetallic vein ores of the Lake City district, in the western San Juan Mountains, Colorado,have producedapproximately$12...northeast,and east sides of the 22.5-m.v.-old Lake City caldera. The veins,typically0.5 to 1.5 m wide...fractures and faults outside the ring fault of the Lake City caldera and within the moat area of the older...fracturesand faultsexclusivelyon the north side of the Lake City caldera, witere vein minerals include' pyrite' |  | | Journal (article/letter/editorial) | | 02:13 13 March 2015 CALAVERITE Cripple Creek, Colorado W ith the exception of native gold and electrum...Cripple Creek district, essentially subsequent to the development of all other Colorado gold districts...suggested for this issue, much of which is devoted to Colorado minerals. Calaverite is a yellowish to silver-white...telluride. Analyses of calaverite from the Kirkland Lake district, Ontario, Canada, show up to several tenths...1995). Calaverite is known from the Star mine in Montgomery County, North Carolina, where it occurs rarely |  | | Journal (issue) | | 46 ISSUE 12 All about My First Tucson Show Lake City Mines and Minerals Guatemala’s Secret Minerals...a special group of people. By Bob Jones LAKE CITY, COLORADO 34 Enjoy its mines, minerals and mountains...died Sunday, Sept. 18, 2016 at his home in Lake Havasu City, Arizona. He is survived by his second wife...The BECMM sponsors digs at the old Eureka Prospect mine near Marion, and it routinely produces the midnight-purple...that one can wear with pride! —Jerry Gehre Johnson City, TN CONTEST RULES Would you like to be named Lapidary |  | Hon, Ken, Ludwig, K. R., Simmons, K. R., Slack, John F., Grauch, R. I. (1985) U-Pb isochron age and Pb isotope systematics of the Golden Fleece vein; implications for the relationship of mineralization to the Lake City Caldera, western San Juan Mountains, Colorado. Economic Geology, 80 (2) 410-417 doi:10.2113/gsecongeo.80.2.410 | Journal (article/letter/editorial) | | Systematicsof the Golden Fleece Vein Implications for the Relationshipof Mineralization to the Lake City Caldera...Caldera, Western San Juan Mountains, Colorado KEN HON, K. R. LUDWIG, K. R. SIMMONS, U.S. GeologicalSurvey,Denver...27.5 + 0.5 m.y. has been determinedfor the Golden Fleece vein, southwesternColorado,which containsan...pitchblendeand gold-silver telluridesunique within the Lake City area. Initial Pb isotoperatiosof ore samplesfrom...related to the 23.1-m.y.-old Lake City caldera.Other veinsin the Lake City areahavePb isotoperatiosand |  | | 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) | | Wilderness Study Area, western San Juan Mountains, Colorado* by Ken Hon, Dana J. Bove, and V. J. S. Grauch...S. Geological Survey, Federal Center, Denver, Colorado, 80225 STUDIES RELATED TO WILDERNESS Bureau...Wilderness Study Area (CO-030-217), Ouray and Hinsdale Counties, Colorado. SUMMARY The western San Juan Mountains...volcanic field that covered much of south-central Colorado during Oligocene and Miocene time. The earliest...coalesced and nested calderas that extends from Lake City to Silverton. The main stage of caldera-forming |  | | 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 (issue) | | Eureka and Adjoining Districts San Juan Mountains, Colorado By WILBUR S. BURBANK and ROBERT G. LUEDKE GEOLOGICAL... 535 Prepared in cooperation with the Colorado State Mining Industrial Development Board A study of...-- __ ----- _--Exploration and mining ____________________________ _ Lake Emma-Ross Basin area ____________________...Juan, San Miguel, and Hinsdale Counties. 2. Geologic map of the Eureka district and adjoining areas. 3...sections of the Eureka district and adjoining areas, San Juan, Ouray, and Hinsdale Counties, and explanation |  | | 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 |  | | Journal (issue) | | Thomssen Mineral Exploration Consultants Carson City, NV photography: Nelly Bariand Sorbonne Paris, France...R. Kampf Natural History Museum of Los Angeles County Arthur Roe Tucson, AZ Abraham Rosenzweig University...Behnke Famous mineral localities: the Corrego Frio mine and vicinity, Minas Gerais, Brazil ...............Person-other—Other persons such as miners, field assistants, mine managers, etc. Place —Used when a mineral is named...Czechoslovakia France Germany Japan Italy Mexico Namibia USSR USA Zaire Total Total number of species during 5-year |  | | Report (issue) | | deposit. Table 4, part B, gives an alphabetic list of mine and properties followed by the deposit name. CHARACTERISTICS...deposits used in Table 1 may represent a major mine, district name, or local town name or other prominent... Pyrrhotite appears to be been reported in just a single mine in the East Belt of the Sierra Nevada foothills...(Malcolm, 1912), galena was widely considered by mine operators to be correlated with better gold grades...was described in a carbonate quartz veinlet in one mine in the Mother Lode system (Knopf, 1929). Method |  | | Journal (article/letter/editorial) | | interesting paper on empressiteand stuetzite from Colorado by Dr. R. M. Honea ( 1 9 6 4 ,p . 3 2 5 - 3 3...assembiages Ag5 *Te3-petzite, ancl Ags *Terpetzite-hessite. 1 Present address: Dept. Mines and Technical Surveys...associationsobservedfrom the Golden Fleece mine: Ag6-*Te3-petzite, and Ag5-*Te3-hessite-petzite.If these are...decompose after thirteen hours to Agr-*Tea plus hessite. It is similar to petzite in optical propertiesand...irridescent tarnish formed by petzite, Ag5-,Ter, or hessite' Phaserelations determinedin isothermalsectionsof |  | | Journal (article/letter/editorial) | | ,of commerci,alimportance. MINE WATERS. A studyof the 'behaviorof mine watersis essentialin an in-... 420. $6Rickard, T. A., "The Enterprise Mine, Rico, Colorado," Trans. A•n. Inst. Min. Eng., vol. 26,...testedwereargentire, pyrarr gyrite,proustire, polybasi,te, hessite, cerargyrite, argentiferous, te'trahedriteand galena...have no effect comparableto ferrous sulphate. Since mine waters in the deeperzonesbecomealkaline, it is pertinent...hundredsof feet belowthe water level as at Aspen, Colorado. •lrgentite. Argentire and the sulphosalts, not |  | | Report (volume) | | REPORT ECONOMIC GEOLOGT 7 SILVERTON QUADRANGLE, COLORADO FREDERICK RANSOME WASHINGTON GOVERNMENT PRINTING.................../................:. Methods of mining and treatment of ores....-....--. ...... ........................ ...... ....... Lodes of Silver Lake Basin... ..................... ...................Silver Lake mine..... . -.-.-..--....-.---..-.-. ....................... 145 145 145 149 Iowa mine ......Royal Tiger mine......................... 159 ......--.....-....-.-....-. Buckeye mine ........... |  | | Journal (issue) | | Univ. of So. Florida Richard W. Thomssen Carson City, Nev. photography Nelly Bariand Sorbonne, Paris...Weber Mamaroneck, N.Y. Articles Collecting gold mining memorabilia.......................................... 337 by D. J. Mossman The Colorado Quartz mine, Mariposa County, California: a modem source of crystallized...information contact: Gale Thomssen P.O . Box 1656 Carson City, NV 89702 702-883-2598 Registration deadline: January...experiences her interest in mining and minerals began to grow. In 1929 she moved to the mining town of Bisbee and |  | | Report (issue) | | 5.1 cm high from Eagle's Nest mine in Placer County, Caifornia, USA Collection Marlin Zinn; photo Jeff...International, LLC P.O. Box 263, East Hampton, CT 06424, USA Phone 1.860.267.1512; fax 1.860.267.7225 www.lapisint...Lapis International, LLC East Hampton, Connecticut USA Collection 'Alan Table of Contents What Is Gold...Southeastern USA . . . . . . . .P. 16 R. Chris Tacker California and All That Is Golden . .. .. . . .... . . . . . . . . . . . . . P. 60 Stefan Weiss Golden Pseudomorphs . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | Marvin Hanner Additions to the Ore Mineralogy of Colorado.................................................by Donald Grybeck Crystallized Minerals of the Colorado Mineral Belt....................................had achieved considerable fame, and the right to mine diopside was obtained that year by G eorge L. English...thereafter. In 1971 both the land and the right to mine diopside were purchased by the present owners, Schuyler...Alveum, R obert Dow, and G eorge Robinson. T he mine is now being worked interm ittently each year for |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ..................................Co. Mining Districts ............................................................22 Arizona County Map.........................23 Arizona – Cochise Co. Mining Districts .................................... |  | | Report (volume) | | ............................................. Colorado........................................................................................ 102 District of Columbia ....................................to refer to Geological Survey Bulletin 507, "The mining districts of the western United States," and to...abundant it may have been completely exhausted by mining or quarrying. Deposits of minerals that are widely...because they occur in sufficient quantity to warrant mining for their usual products, but because they furnish |  | | Report (volume) | | it helpful to refer to Survey Bulletin 507, "The mining districts of the western United States," and to...abundant, it may have been completely exhausted by mining or quarrying. Deposits of minerals of wide distribution...because they occur in sufficient quantity to warrant mining for their usual products but because they furnish...A. F. Rogers, Stanford University, Palo Alto. Colorado.........Prof. R. D. George, Boulder. Connecticut...Indianapolis. Iowa.............. Prof. George F. Kay, Iowa City. Kansas............Prof. Erasmus Haworth, University |
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