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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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| 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...Metamorphic rocks ________________________ _ Idaho Springs formation _______________ _ Swandy ke hornblende..._ Igneous rocks _____________________________ _ Quartz monzonite gneiss ________________ _ Granite gneiss |
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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 .................................... |
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| ...........................................47 Colorado ..............................................................................458 Appendix B - Quartz Family Gemstones ................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham |
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| ...........................................47 Colorado ..............................................................................460 Appendix B - Quartz Family Gemstones ................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...includes granites, schists (mica, garnet, graphite, quartz), and gneisses, as well as numerous granite pegmatites...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham |
 | Blevins, Tim, Daily, Dennis, Dean, Sydne, Nicholl, Chris, Olsen, Michael L., Sturdevant, Katherine Scott - Eds. (2013) Rush to the Rockies! - The 1859 Pikes Peak or Bust Gold Rush. Pikes Peak Library District. | Book |
| ‘ . ; , . tr A ; . ' Pikes Peak Library District Special Collections thanks the sponsors of the...WESTERN STUDIES COLORADO rt UMANITIES I SOIT FRIENDS ofthe PIKES PEAK LIBRARY DISTRICT Digitized by...+ ENGAGE + TRANSFORM with the Western Museum of Mining & Industry Rush to the Rockies! The 1859 Pikes...Peak or Bust Gold Rush © 2013 Pikes Peak Library District. All rights reserved. First edition. Printed in... represent the opinions of Pikes Peak Library District (PPLD), PPLD Board of Trustees, or PPLD employees |
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| "White Section" in a Permian basin in the Clermont area, central Queensland. The "White Section" was first...simply regarded as an oxidized section of the Blair Athol Coal Measures (Preston, 1985). In the present...schists with minor quartzite; the early Permian Blair Athol Coal Measures, including up to 50 m of basal...At Black Ridge, it conformably overlies the Blair Athol Coal Measures, unconformably overlies the Anakie...sections, the remaining pebbles are composed mainly of quartz, since lithic and feldspathic pebbles B Figure |
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| Smith. Director Professional Paper 138 MINING IN COLORADO A HISTORY OF DISCOVERY, DEVELOPMENT AND PRODUCTJON..._____ _ The location, area, and organization of the mining counties of Colorado _________________________..._____________________ _ Alamosa County __________________________ _ Arapahoe County _________________________...Archuleta County _________________________ _ Baca CountY-----------------------------Boulder CountY------...CountY----------------------~----Chaffee County _____________________·______ _ Clear Creek County _______________________ |
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| IN AUSTRALIA Cover Picture—The Argyle Diamond mine Photo by courtesy of Ashton Mines Limited GEOLOGICAL...17 THE Published by AUSTRALASIAN INSTITUTE OF MINING AND METALLURGY Clunies Ross House, 191 Royal Parade... © Copyright By THE AUSTRALASIAN INSTITUTE OF MINING AND METALLURGY The Institute is not responsible...deposits An exploration case history in the Telfer mine corridor The discovery and evaluation of gold mineralisation...Boddington gold mine Mt Gibson gold deposit M. P. M. M. El-Ansary and Collings El-Ansary and J. Sale |
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| of the specimens were analyzedin the Isotope the area. GeochemistryLaboratories,University of QueensSincemostof...BlackRidgedeposit Devonianvolcanics,the Early PermianBlair Athol basedon detailedsurfaceandundergroundmapping coal...Jeol5XA-50A electronmicroprobein the Departmentof Mining and MetallurgicalEngineering,Universityof Queensland...structureshavebeen recordedin the Blair Athol face(seelater sections). !i•Springs ii. Basin Geology,Alteration...1979;I'ons, 1983). Permian basins in the Clermont area are tectoni- sections (Figs.3 and4). A shearzoneis |
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| ................. Structure of the Schichallion Area ............................. Line of Contact between...427 429 433 435 438 441 I. INTRODUCTORY. T h E district studied extends from the northern slopes of Carn...north-and-south axis for about 7 miles into the flags. Tile area includes the best development of tile well-known...date, to a certain study of the geology. 1 The district was mapped about the year 1900 by the late Mr...its main features, and the investigation of the area would have been a task of far greater difficulty |
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| overlying basal conglomerates of the Permian Blair Athol Coal Measures. The carbon and oxygen isotopic...instrusive rocks c o m m o n throughout the Clermont area. Mixing of the two fluids along the unconformity...and Malone 1973). The main igneous units in this area are the Middle Devonian andesite basalts, the late...Since then, gold production had declined steadily. Mining virtually ceased in the 1950s, hut in the late...regenerated interest in the area. Black Ridge is the largest deposit in Clermont area. The gold mineralisation |
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| resulting from a lightning strike (Fording Coal Mine) Summary The dispersion of boron following combustion...contents of ash yields for coals from the Theodore District, Queensland, Australia 5. Boron contents versus...coals in the Eagle Mountain section, Fording Coal Mine 9. Variation of boron in medium volatile to semianthracitic...sulphur, and boron (ppm) in a coal seam at the Vesta Mine, Alberta 15. Coalfields of Canada 16. Coal districts...boron, for coal layers and partings in the Blakeburn Mine, British Columbia 20. Coal districts and coalfields |
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| Tibooburra some years ago and asked him about the area. Impassable when wet "Make sure your vehicle is...there has been no rain because all the roads to the area become impassable when wet," he said. We intended...moonscape, changed. The flat ground merged with quartz-covered ridges. Wtld goats were in abundance and...eagles were feeding on roadside carcasses. That quartz country was a dead give away. This was gold country...tell you what to look for, how big the particular area may have been and so on. Let's examine the following |
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| found associated with pyrite, calcite, siderite, quartz or apatite in coals from the Sydney Basin, New...deposition such as Hat Creek, deposit, Fording coal mine, British Columbia, and Byron Creek Collieries in...(Clark and Swaine, 1962) and from the Theodore district, Bowen Basin, Queensland, Australia (Swaine, 1971...= H a t Creek coal deposit; b=Line Creek mine; c=Fording mine; d = Byron Creek Collieries; e=Mount Allan...Columbia coals; g= Obed Marsh deposit; h = Vesta mine; i = Springhill coalfield; j = Hoidahl Dome: k = |
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| Inc. 3300 Penrose Place, P.O. Box 9140, Boulder, Colorado 80301 Printed in U.S.A. GSA Books Science Editor...Panthalassan Margin of Gondwanaland: Boulder, Colorado, Geological Society of America Memoir 184. Pangean...Panthalassan Margin of Gondwanaland: Boulder, Colorado, Geological Society of America Memoir 184. 6...in the mid-Carboniferous Kanimblan and Alice Springs orogenic movements, documents the central African...Belt, eastern Australia: Australasian Institute of Mining and Metallurgy, Pacific Rim 90 Congress, v. 2, |
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| stumble over a valuable nugget and stake your own mining claim? Indeed it to is, and author book Jay...prospecting, he points out, is in abandoned mining districts, where valuable mineral ores are present...commercial ores and secondary minerals by state, county, township, and geologic range. For easy identification...RANSOM 1875-1948 An to the Eastern '‘Schoolmarm” Mining Camps of the Old West I I a s I \ h K... CONTENTS Preface ix PART I 1 Introduction to Mining and Mineralogy 2 Preparation for Mineral Collecting |
 | Michaelsen, P., Henderson, R. A., Crosdale, P. J., Fanning, C. M. (2001) Age and significance of the Platypus Tuff Bed, a regional reference horizon in the Upper Permian Moranbah Coal Measures, north Bowen Basin. Australian Journal of Earth Sciences, 48 (2) 183-192 doi:10.1046/j.1440-0952.2001.00854.x | Journal (article/letter/editorial) |
| alteration. Crystal content (10–15%) is dominated by quartz, suggesting a rhyolitic association. SHRIMP U–Pb...These coal measures are the focus of contemporary mining in the north Bowen Basin and have been the subject...14 (AMG 8554E 049845N) located in the Broadmeadow area, ~20 km north-northwest of the township of Moranbah...bed. In drillcore DDH20, from the Moranbah North area (Figure 3), the tuff is characterised by two superposed...tuff. The dominant crystal components consist of quartz as blocky subhedral grains and elongate slivers |
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| inorganic composition of the coals. Not only is coal mining crucial to the economies of both Australia and...outcrops, supplemented by subsurface data from coal-mining companies, have allowed detailed reconstruction...a southeastward polar wandering path across the area during the Permo- Downloaded from http://sp.lyellcollection...the Carboniferous Period over the Bonaparte Gulf area of northwestern Australia, but were followed by...subsidence patterns. For example, the retroarc foredeep area of the southern Karoo Basin (Fig. 7) was generally |
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| What a US President has to do with an Aussie gold mine A PRE-DECIMAL BEACH BONANZA Finding the one beach...to Mt. Surprise and dug around the O'Briens Creek area a few times but of all the gemstones I've found...Collins, a fossicker well known in the Coff's Harbour area, and a man worth listening to if you can appreciate...myself back up in the Mt. Surprise/O'Briens Creek area chasing a few elusive blue topaz for our collection...up an old friend, Wayne Haber. Wayne is a local, mining for tin when the price is right or scrambling about |
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| .. (a) Work of Dr. H. C. Sorby. (b) Pebbles of Quartz. (c) Do. of Felspar. (d) Do. of Pegmatite. (e)...Finer Material ........................... (I) Quartz. (2) Felspar. (3) Mica. IV. Heavy Minerals of the...importance. The Millstone Grit Series covers an area in Yorkshire alone of no less than 850 square miles...various beds have also been e.xamined. Further, the area laid under contribution for material for this research...says 1 :__ ' B y far the commonest pebbles are of quartz like that forming one of the constituents of coarse-grained |
 | | Journal (article/letter/editorial) |
| ealcareo-phosphatic nodules. It contains no flints; and in the district referred to none occur below it; but there is...previously established by one of the authors in the county of Sutherland was applicable, as he had inferred...Cambrian sandstones ; these again unconformably by quartz-rocks, limestones, and a gneissose and schistose...previously shown in the typical district of Assynt. From the base of these quartz-rocks a perfect conformable...by these upper strata ; and the limestones and quartz-rock come up again in another anticlinal axis Corresponding |
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| Petrified Forest Trails Arizona Gem Trails and the Colorado Desert of California High Tension (A Biography)...\merica Alabama Alaska Arkansas Arizona California Colorado Connecticut Delaware Florida Georgia Hawaii Idaho...Size Categories Dana's Classification of Minerals Quartz Family Gemstones The Various Names and Forms of...archaeologists working in the remote Lake Rudolf area of Africa's Kenya found shaped stone implements...ancient gems), calcite, fluorspar, jadeite, pyrite, quartz family minerals ( agate, carnelian, chalcedony |
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| AUSTRALIAN BLACK COAL ITS OCCURRENCE, AND PREPARATION MINING, USE Editor A. C. COOK DISCARD Proceedings...Symposium on ‘‘Australian Black Coal — its occurrence, mining, preparation and use’’ organised by the Illawarra...Illawarra Branch of the Australasian Institute of Mining and Metallurgy and held at the University of Wollongong...INCORPORATED BY RCYAL CHARTER 195$ AUSTRALASIAN MINING AND ILLAWARRA QI SCARD INSTITUTE METALLURGY...Illawarra Branch. Australasian Institute of Mining in any of its publications. and Metallurgy |
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| cent V.M. d.a.f. Big Greta Bulli Eclipse . Blair Athol, Queensland Northern Coalfield, N.S.W. Southern...acceptable criterion for distinguishing minerals: quartz is quartz, however formed and wherever found. Nevertheless...bodies are not vesicular. Big Seam (Permian), Blair Athol, Queensland. Polished surface, oil immersion...and micrinite inclusions. Big Seam (Permian), Blair Athol, Queensland. Polished surface, oil immersion...of disordered material. Big Seam (Permian), Blair Athol, Queensland. Polished surface, oil immersion |
