 | | Report (volume) | | Deposits Of the Lawson-DumontFall River District Clear Creek County Colorado By C. C. HAWLEY and FRANK BAKER...Oxides_______________________________________________ Uraninite, variety pitchblende_______________________ Hematite...and section of the Lawson-Dumont-Fall River district, Clear County, Colo. 2. ~ap showing major faults...faults (veins) of the Lawson-DumontFall River district projected to a horizontal plane having an elevation... CONTENTS PLATE 3. Map of the Lawson-Dumont-Fall River district, showing location of mines and distribution |  | | Report (volume) | | Geology of Uranium Deposits in the Front Range, Colorado By P. K. SIMS and D. M. SHERIDAN With sections...mines_______________________________________ Boulder CountY----------------------------------~-----------Jamestown...Generalfeatures--------------------------------------Blue Jay mine, by R. U. King__________________________ Fair Day...mine________________________________________ Nations Treasure mine, by R. U. King___________________ Victory group...Description of principal mines-Continued Boulder County-Continued Other areas __________________________ |  | | Report (issue) | | Deposits Central Part of the Front Range Mineral Belt Colorado By P. K. SIMS and others GEOLOGICAL SURVEY PROFESSIONAL...____________________________ _ West Flack mine __________________ _ ~ercer County mine ______________ -German and Belcher...Iron mine, by A. A. Drake, Jr ___________ _ Jefferson-Calhoun vein _________________ _ Kirk mine ____..._______ _ Old Town mine, by A. A. Drake, Jr ______ _ Springdale (Gold Rock) mine, by A. A. Drake, J r...r ________________________ ---Telegraph mine ________________________ _ Wood vein ____________________________ |  | | Book | | Uranium Deposits, Grants Uranium Region, New Mexico, USA C.E. Turner, N.S. Fishman, P.G. Hatcher, and E.C...netic Relationships of Vein Pyrobitumen in the Panel Mine, Elliot Lake Uranium District, Ontario, Canada J...of solid bitumen around radioactive minerals (uraninite, monazite, zircon, etc.), precipitated by pol...and cracks) or a mosaic texture, but there is no clear relationship with the degree of metamor- Fig. 8...of epi-impsonite; migrabitumen from an iron ore mine, Nammen, NW Germany (incident light, glycerine immersion) |  | | Report (volume) | | important were those in the Central City district, Colorado, from which about 300 tons of high-grade pitchblende...Silver Cliff mine, Wyoming; the Jesse D No. 1 and No. 2 claims, Utah; and the Merry Widow mine, New Mexico...Utah; the Schwartzwalder (Ralston Creek) and Los Ochos mines, Colorado; the Early Day and Buckhorn claims...mines, Washington; the W. Wilson mine, Montana; the White King mine, Oregon; the deposits in the Pryor...deposits in the Dripping Spring quartzite, Gila County, Ariz. According to Nininger (1954, p. 43), as |  | | Journal (article/letter/editorial) | | occurring together) from the Calumet and Hecla mine. Excepment in the oxide zones of a variety of metal...Copper Falls mine, associations and include those containing other silver minerals, Keweenaw County. barite...half of the and cobalt arsenides with or without uraninite and bismuth. nineteenth century resulted in the...major Acton mine, York County, the Deer collections. One state that is draped in a silIsle mine, and the...the Sullivan mine ver-lined history is Colorado, with a pro(King and Foord 1994). Silver duction of more |  | | Report (volume) | | Clarke " . On the occurrence of nitrogen in uraninite, and on the composition of nraninite 4:1 in general;-...of nitrogen . Analysis of uraninite .. CO . . 772 Bohemian and Saxon uraninite . 73 Discussion of analyses...Special experiments relating to the nitrogen in uraninite. 76 Effect of heating in air . .. . 77 Effect...hydrogen . . 78 Conclusions Metacinnabarite from New Almaden, California; by W. H. Melville An apparatus for...it is rich enough in color and is sufficiently clear it is often cut as a gem. It has the characteristic |  | | Report (issue) | | Norte Cty, CA Santa Helena, Antioquia, Colombia Goto Mine, Luzan, P.I. References Wells, F. G. et al 1946... Examples Urals, USSR Duke Island, Alaska Choco River placer, Columbia 1.2 (continued) References Duparc...K-feldspar altered host rocks. Examples Climax Colorado References 10 Rb White and others, 1981 2... W, Mo, Zn, Cu, Sn, Bi, Be, As. Examples Pine Creek, California MacTung British Columbia Strawberry...F, Be, Zn, Pb, Cu, Ag, Li, Rb, Cs, Re, B. Lost River, Alaska References 16 Dobson, 1982 3.1 DEPOSIT |  | | Report (issue) | | been found in the mining the nugget Jim, Placer County, California, in 1871 by a small girl in who town...The bibliography has been updated and expanded. County lists published by Collins (1) pp. 40-64, in Murdoch...rhyolite locality in Alameda County and the lawsonite type locality Marin County, which have been completely...color" from Cherokee Flat, Butte County); and to borax ("Lake County, in large crystals in the clay of...this is the total entry!). No hint acid. Clear Lake, Lake County" foreshadows the subsequent discovery of |  | | Report (issue) | | PRELIMINARY REPORT ON THE ECONOMIC GEOLOGY OF GILPIN COUNTY, COLORADO. By EDSON S. BASTIN and JAMES M. HiLL.1 INTRODUCTION...the economic geology of Gilpin County and adjacent portions of Clear Creek and Boulder counties, Colo.,...Mountains. It is the oldest lode-mining region in Colorado, and its discovery in 1859 was the occasion of...productive portions of Gilpin County and small adjacent parts of Boulder and Clear Creek counties, all within...Gilpin County, Central City, Blackhawk, Nevadaville, Eussell Gulch, Perigo, and Apex; in Clear Creek County |  | | Book | | approximately 5 cm taii and is from the Eagle's Nest mine, Piacer County, California. Ross Beaty Collection. Photograph...Tetrahedrite-Tennantite .. .. .96 . ....... 98 . ....... 100 Uraninite ... ... .... . · ·· ·· · · · ··· · · ·· -- ··...References: Chace F.M. (1956) Abbreviations in field and mine geclogical mapping. Economic Geclogy, v. 51, p....Soregaroli. Photograph by Dan Marshall. Acanthrte with clear to cloudy calcite c,ystals. There are at least three...Quigleys gold deposits of the Ml. Todd (Yimuyn Manjerr) Mine, Australia: structural, petrographic and mineralogical |  | | Book (volume) | | ...........................................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 |  | | Book (volume) | | ...........................................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 |  | | Journal (article/letter/editorial) | | pegmatite was mined at Barringer Hill in Llano County in the early 1900s but was flooded by Lake Buchanan...from 1900 to the middle 1940s; but the Mariposa mine, which produced most of the rare minerals, ceased...& Minerals on "The Weeks Pegmatite Mine, Wakefield, Carroll County, New Hampshire" (March/April 1991)...66, May/June 1991 197 LOCALITIES BY COUNTY Bastrop County KEY mm T * ? — — — — best occurrence..."specimen quality" questionable occurrence Angelina County Lufkin, 1 mile N of Lufkin in railroad cuts, in |  | | Report (volume) | | Rm G-84 DENVER, Colorado--Federal Bldg., Rm. 169, 1961 Stout St. LAKEWOOD, Colorado-- Federal Center...Hg by James J. Rytuba 27b Descriptive model of Almaden Hg, by James J. Hytuba 178 180 VII 27c 181...based on considerations that extend far beyond the mine itself, in some instances relating to the overall...subject, as in a scale model of the workings of a mine, to a unifying concept that explains or describes...------------------------------------------27a Almaden Hg ---------------------------------------------27b |  | | Book (volume) | | ...........................................59 Colorado ...............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map .............................................................42 Arizona – Yavapia Co. Burro Creek area Site Map ................................. |  | | Book (edition) | | MESOTHERMAL DEPOSITS 317 Coeur d’Alene, Idaho 319 Magma Mine, Arizona 325 Chuquicamata, Chile 333 14 EPITHERMAL...EPITHERMAL DEPOSITS 344 Chinese Antimony Deposits 346 Almaden, Spain 349 Pachuca-Real del Monte District, Mexico...Mexico 15 TELETHERMAL DEPOSITS 354 362 Colorado Plateau Uranium-Vanadium Deposits Upper Silesia Zinc-Lead...Besides, what we are pleased to call the riches of a mine, are riches relatively to a distinction which nature...also advocated by Joseph Brunner (1801), a Bavarian mine official. Scipione Breislak (1811) an Italian geologist |  | | Report (volume) | | Division of Mines Special Reports _.......__ ________ Colorado Mining Association publications . Economic Geology...the areas and subjects are listed under States, "Colorado Plateau," "United States," or under a few subject...400-760) covering areas east of the Mississippi River may be obtained from the U.S. Geological Survey...25, D.C.; maps of areas west of the Mississippi River may be obtained from the U.S. Geological Survey...Institute San Diego, San Diego Public Library COLORADO Denver, Denver Public Library CONNECTICUT New |  | | Book | | Oxon 0X14 4RN 711 Third Avenue, New York, NY 10017, USA Routledge is an im print o f the Taylor & Francis...QE390.I53 1989 552 \0 6 88-3015 ISBN 0-470-21072-9 (USA only) CONTENTS Preface and Acknowledgements ix...Stannite Stibnite Sylvanite Tennantite Tetrahedrite Uraninite Wolframite 123 125 126 127 128 129 130 131 132...the years from teaching students in the UK and the USA and from the feedback they have provided. Professor...Native platinum Cobaltite Tetrahedrite, tennantite Uraninite, chromite Sphalerite Magnetite Aids to identification |  | | Report (issue) | | a short article on California diamonds. Amador County: A few small stones have been picked up near the...the towns of Volcano, Oleta and Fiddletown. Butte County: In 1853 it was observed that diamonds occurred...namely, on Webber Creek, in "Wliite Rock canyon and at Smith's Flat. Fresno County Small diamonds are...been found a few miles north of Coalinga. Nevada County A 1-^ carat stone was found at French Corral. Siskiyou...El Dorado County Forest Hill. About : sixty have been : : : Bar. Trinit}^ County : INIicroscopic |  | | | | Peninsula, Michigan. Found in Colorado at Aspen and in Boulder County; also in several mining areas in...Telluride, Cripple Creek, and Breckenridge districts of Colorado. Also at Homestake Mine, South Dakota; in...U.S.S.R.; and at Waihi Mine, New Zealand. In Australia, at Mount Morgan Mine, from Chartres Towers district...Luning and Cuprite in Nevada; at Sulphur Bank mercury mine and at Lassen Peak, California. Sharp well-shaped... Fine crystals of dark color at Breckinridge, Colorado. Excellent crystals at Butte, Montana. Green varieties |  | | Book | | tetrahedrite from bournonite, rock crystal from clear gypsum or aragonite, vesuvianite from garnet, and...travel through the mineral — it is transparent or clear. Only some minerals have their own constant colour...minerals are divided into four groups. Colourless, clear (achromatic) and transparent minerals transmit light...until the methylalcohol, turning brown, remains clear. The cleaned specimen should be left to dry and...and viscosity. Only inert polymers which remain clear as solids should be chosen. It is not advisable |  | | Book | | tetrahedrite from bournonite, rock crystal fram clear gypsum or aragonite, vesuvianite from garnet, and...travel through the mineral - it is transparent or clear. Only some minerals have their own constant colour...minerals are divided into four groups. Colourless, clear (achromatic) and transparent minerals transmit light...until the methylalcohol, turning brov✓n, remains clear. The cleaned specimen should be left to dry and...and viscosity. Only inert polymers which remain clear as solids should be chosen. It is not advisable | | | Book | | tetrahedrite from bournonite, rock crystal from clear gypsum or aragonite, vesuvianite from garnet, and...travel through the mineral - it is transparent or clear. Only some minerals have their own constant colour...minerals are divided into four groups. Colourless, clear (achromatic) and transparent minerals transmit light...until the methylalcohol, turning brown, remains clear. The cleaned specimen should be left to dry and...and viscosity. Only inert polymers which remain clear as solids should be chosen. It is not advisable |  | | Journal (article/letter/editorial) | | across, on blue thomsonite. Lucky Peak Dam, Ada County; Lanny Ream specimen and photo. Figure 3 (below)...cut near Pinehurst, Adams County; Lanny Ream specimen and photo. Ada County Lucky Peak Dam, on east side...LEVYNE, PHILLIPSITE, and THOMSONITE. Adams County Alaska mine, Seven Devils district: azurite, grossular...grossular, malachite, powellite, and scheelite. Arkansas mine, Seven Devils district: grossular. Blue Jacket claim...and stilbite. Copper Bo~' mine, Seven Devils district: epidote. Helena mine (reportedly just northwest |
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