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| 4.464(3) Z=8 X-ray Powder Pattern: Cripple Creek, Colorado, USA. 3.03 (10), 2.11 (7), 2.94 (6), 2.23...(1) Cripple Creek, Colorado, USA; corresponds to (Au1.02 Ag0.02 )Σ=1.04 Te2.00 . (2) Moose mine, Cripple...Cripple Creek, Colorado, USA; Fe is from pyrite; corresponds to (Au0.80 Ag0.20 )Σ=1.00 Te2.00 . (3) Săcărı̂mb...Dimorphous with calaverite. In hydrothermal veins with other tellurides. Association: Calaverite, coloradoite... In the USA, in Colorado, at several mines in Cripple Creek, Teller Co.; the Smoky Hill mine, Boulder |
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| GEO LOGY AND GOLD DEPOSITS OF THE CRIPPLE CREEK DISTRICT, COLORADO BY \V ALDEl\;IAR LINDGREN A:'\D ... . . . . . . . First geological survey of the district .............................. _• . . . . . ..................... Geological structure of the district ............... _................... __ .. _....• _. _•••• _••• _. _••• ___ . ____ 43 43 Cripple Creek granite ... ----.-----------------.----- _____________..._____________ . _. __ ... __ •.. Spring Creek granite ......•...•... _... __ . _____ •• _.• _• _•. ___ |
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| Cooper Nottingham, England Anthony R. Kampf L.A. County Mus. of Nat. Hist. Los Angeles, CA Joseph A. Mandarino...Famous mineral localities: The Cripple Creek Mining District, Colorado . . . . . . . . . . . . . . . ...[Ba(UO2)2V2O8⭈5H2O] from the type locality, the Mounana mine, Franceville, Haute Ogooué, Gabon. See the article...“This is the XYZ mine, and these are pretty pictures of the minerals from that mine.” Lou, however, took...chemistry, crystal system, identifying features, and mine of origin—all without notes. From his huge library |
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| 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 |
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| PROGRESS GEOLOGICAL RESURVEY OF THE CRIPPLE CREEK DISTRICT, COLORADO BY WALDEMAR LINDGREN AND FREDERICK..... ...:......................_...._....... 8 Mining and metallurgy ....................................^...... 11 First geological survey of the district ................................... Modifications............................. 32 Future of the district.................................................preliminary report on a "Resurvey of the Cripple Creek district of Colorado," by Messrs. Waldemar Lindgren and |
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| R. Kampf Natural History Museum of Los Angeles County George Robinson National Museums of Canada Arthur...SPECIMENS from the collection of the Geology Museum, Colorado School of Mines. See page 242 for a full description... All rights reserved. notes fromthej EDITOR COLORADO-III Here we are with our third special issue devoted...devoted to the mines and minerals of Colorado. As most long-time subscribers know, the first in the series...about $200 on the out-of-print market. The second Colorado issue was vol. 10, number 6 (1979), and we still |
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| 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...experiences her interest in mining and minerals began to grow. In 1929 she moved to the mining town of Bisbee and...she and Brooks became part owners of the Old Yuma mine nearby. After a few years her strong love of minerals...well known for his mining ventures in Mex ico (particularly the San Francisco mine in Sonora). Many extraor |
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| 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 |
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| with its representation of mining tools clearly proclaim Montana’s mining origins. Montana’s production...published describing the occurrence, collecting, mining, and cutting of the two state gemstones. Figure...Granville Stuart established Montana’s first mining camp at Gold Creek in 1860. Geologic Provinces The state...MICHAEL J. GOBLA 19055 East Bethany Place Aurora, Colorado 80013 gobla@copper.net Unless otherwise noted...view showing the Indian Queen mine ca. 1905 at Farlin, Beaverhead County. 208 ROCKS & MINERALS Downloaded |
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| ...........................................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 .................................... |
 | Xu, W., Zhao, J., Brugger, J., Chen, G., Pring, A. (2013) Mechanism of mineral transformations in krennerite, Au3AgTe8, under hydrothermal conditions. American Mineralogist, 98 (11) 2086-2095 doi:10.2138/am.2013.4485 | Journal (article/letter/editorial) |
| South Australia 5005, Australia 1 Abstract Calaverite, krennerite, and sylvanite are Au-Ag-tellurides...Previous experimental studies show that both calaverite and sylvanite transform to porous “mustard” gold...products, contrasting with the simple replacement of calaverite by gold. Here we report results of an experimental...with Ag contents intermediate between those of calaverite and sylvanite. Krennerite was replaced by Au-Ag...alteration of krennerite is very similar to that of calaverite, but differs from the alteration of sylvanite |
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| S.A. Old No. l Headfnme. Whi ■ key Hlll Mine, Tuohnne County, CaUfomla (r■-,u. .SV•t- tor cr11•t•J...association. Few of the minute crystals you see on mine or quarry dumps or even on cabinet specimens will...dumps or surface float. Mirute crystals seen on a mine dump are a clue but nearly always tao weathered...on feldspar. 784 ADAMITE, Moha\'.1k Mine, San Bernardino County, r.alifornia. Group o f colorless to...785 ADAMITE (CUPRIAN),MohawkMine, San Bernardino County, California. Nicely spaced transparent jade green |
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| 25 October 1951) The structures of sylvanite, calaverite and krennerite, the three gold-silver ditellurides...the same distance, however. In sylvan±re and calaverite, each tellurium atom is surrounded by three gold...Descriptions of the atomic arrangements in sylvanite, calaverite and krennerite The gold-silver ditellurides form...crystallographically related minerals, sylvanite (AuAgTe4) , calaverite ((Au, Ag)Te~) and krennerite ((Au, Ag)Te~). All...and krennerite have each one perfect cleavage; calaverite has no cleavage. Crystallographic data for the |
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| ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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| ...........................................47 Colorado ................................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a...deep red to variegated⎯ocher. BIBB COUNTY GENERAL AREA: c county gravel pits along the Cahaba R.⎯gemmy |
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| 4 cm -high specimen is from the DeMaria mine in Placer County, California. (Jeff Scovil Photo/Brett Keller... collecting run-of-the-mine specimens by Steve Voynick Montana Placer Mining ............................ 28 Wire gold and glacial nuggets on Hughes creek regular columns by Rob Towner Rock & Gem Kids...mzexpos@gmail.com www.mzexpos.com Like us on facebook COLORADO MINERAL & FOSSIL SHOW SEPT. 7 - 14, 2014 ~ DENVER...EDITORIAL BOB JONES Senior Consulting Editor Moose Lake Mistakes Lake Superior eye agate PAMELA HECHT |
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| Gkologim-in-charge. CATALOGUE OF MINERALS FOUND IN COLORADO. BY • F. M. ENDLICH. [EXTRACTED FROM THE TENTH...been adopted. tar as practicable, analyses of Colorado minerals have been given. They will aid examination...of the catalogue. systematic enumeration of the Colorado mineral species and references to the publications...Endlich, S. IN COLORADO. X. D. The continuous development of mineral resources of Colorado is productive...Geological .Report for PS75. Now, the survey of Colorado is completed, many additions of species new to |
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| ............................................ Calaverite ...............................................elongated rhombic crystal faces, from Nugget mine, Gilpin County, Colo.-................... II. A, Wedge-shaped...from Hoosier mine, Nederland, Colo.; B, Cuboid ferberite crystals from Georgia A. mine, Nederland. Colo...Nugget mine, Gilpin County, Colo.............................. IV. A, Hiibnerite from Birdie mine, Butte...Rollinsville, Colo.; B, Hubnerite crystals from Regan mining district, 35 miles north of Osceola, Nev........... |
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| 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 |
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| JASPER ORBS: Formation of Unique Features Turquoise Mining ROCK & GEM • Vol. 49 No. 06 • U.S. $5.99 Issue...0 74470 02033 2 EMERALD VILL AGE Blue Ridge Mining Exploration Special Section Tools of the Trade...recently extracted from the North Star Mine in Cripple Creek, Colorado; a specimen of Morrisonite jasper....underground workings is visible at the center. MINING HISTORY ASSOCIATION, WWW.MININGHISTORYASSOCIATION...deep ocean black smoker “geysers” were actually mining minerals from the earth’s interior. he mechanism |
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| MINING IN THE CHITINA DISTRICT. By FRED H. MOFFIT. INTRODUCTION. The year of 1909 was one of expectation...expectation and preparation in the Chitina district. The subject of greatest interest to those concerned with...Chititu and Dan creeks in the eastern part of the district were carried on in about the same manner as in...connected with the railroad were 158 MINING IN THE CHITINA DISTRICT. 159 built and a small steamboat...its completion means more for the future of the district than can be estimated. Development of the copper |
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| ............................................. 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 |
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| 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...See Bauxite and Hallpysite. Asbestos. Tallapoosa County, with corundum deposits near Dudleyville; not found |
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| SURVEY GEORGE OTIS SMITH, DIRECTOR BuiiIiETIN 574 MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND................................................. Mining districts...................................................................................... Mining development. ...................... .. - - ' -..................................... 18 Placer mining....... ~................................................................ 20 Present status of mining .....:........................................ |
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| Professor Edwin H . Oshier, Head of the Department of Mining Engineering, made the photographs included in this...7 Bibliography . . . . . 229 Appendix: 252 Mine Index iii NOTATIONS AND ABBREVIATIONS CHEMICAL...Geological Survey in Washington, D. C., or Denver, Colorado, or from the Department of Geology and Geological...Marcasite Arsenopyrite Molybdenite Jordisite Calaverite Sylvanite SULFOSALTS Semseyite Zinkenite OXIDES...prospects in the lower Ludlow lignites. Harding County: 1. Abemathyite has been identified as a component |
