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Iron Ores 1. Segregations of Magnetic Iron Ore in Quartz-free Orthoclase Porphyries and Syenites . . "'...Iron Ore Deposits in the Lower Silurian of Central Bohemia .... 2. The Lower Silurian Iron Ores of the...(Tourmaline-bearing Copper Formations.) 6. Cupriferous Quartz Veins Australian Deposits African Veins (6) ....Copper Veins (Gangue of Various Carbonates with Quartz, ; ,226 Barite, and sometimes Fluorspar) Zeolitic...(Edle) Silver Veins .... 12. High-grade Silver Quartz Veins 262 ........;. 272 13. Rich Silver-Calcite |
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contributed during discussions, field trips, and mine visits. As cited in the text, many colleagues provided.... . . . . . . . . . . . . . . 3.7 Westsudetic-Silesian Region, East Bohemia .. . . . . . . . . . . .... . . . . . . . . 477 477 481 482 Chapter 10 Poland . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . 10.1 Sudety Mountains, Lower Silesia . . . . . . . . . . . . . . . . . . . .... . . . . . . 10.2 Other Uranium Occurrences in Poland . . . . . . . . . . . . . . . . . . . . . . . |
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737 ►• - COVER: Erythrite spray, 4.4 cm, in a quartz-lined pocket, from Schneeberg. Gail and Jim Spann...1877 "find of the century" in the Weisser Hirsch mine; many fine specimens of gangue species-these are...Upper Saxony (Obersachsen) to distinguish it frrom Lower Saxony (Niedersachsen) in northwestern Germany....natural, are in fact centuries-old, multilayered mine dumps, some with ancient tunnels beneath them. Even...District. The Silver Road, with "tourist mines" and old mine structures, beautiful medieval and Renaissance churches |
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companied throughout its entire course by a quartz vein containing chrome- mica. The iron deposits...exert a remarkable influence on the bed of 'copper schist.' This Kupferschiefer is cases. lean in this...conglomerate, which immediately underlies the copper schist, rises from 3 to 10%. In particular the Beyschlag...DEPOSITS. 343 1 . They carry siderite, ankerite and quartz as a nickel pyrite and bismuth glance, nickeliferous...pierite and volcanic tuffs 21. QUARTZ-COBALT VEINS. (Quartz-Cobalt-Bismuth Deposits. ) One of |
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mines, including the celebrated Mount Boppy, which mine Field," of has for some years been the most productive...... ... Railway opened 1891. Burra Burra Copper Mine discovered 1879. Mount Boppy Lode discovered in...White, F.C.S., Assistant Analyst The 30 30 30 30 quartz-felspar porphyries, sedimentary types ... rhyolites...under the Mount Boppy control The Mount Boppy Gold Mine Situation 46 47 48 48 lodes ores... 41 Distribution...Distribution of ore in lode Possible future development of mine Notes on ore treatment ... ... ... ... ... . |
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LEVEL C Is equigranular lamprophyre granite, quartz monzonite, diorite £ C 443 H H O H Ctf c/3 O...sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...(Ronov and Yaroshevsky, 1969). Tonalité (light quartz diorite) "is the dominant rock type in the continental...batholiths (gabbro, diorite, tonalité, granodiorite, quartz monzonite, granite) having a total silica content...The present is a "prime time" of exposure of the lower Tertiary and late Mesozoic high-level (epizonal) |
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IVOLCANICj lamprophyre equigranular g r a n i t e , quartz monzonlte, d i o r i t e O 3 DEEP LEVEL aplite...sills), if they are exposed in outcrop or in the mine workings at all. The Climax Mo complex is the best...the crust (Ronov and Yaroshevsky, 1969). (light quartz diorite) "is the dominant rock type in the continental...batholiths (gabbro, diorite, tonalite, granodiorite, quartz monzonite, granite) having a total silica content...The present is a "prime time" of exposure of the lower Tertiary and late Mesozoic high-level (epizonal) |
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Lithium-Beryllium-Cesium Mica Nitrate Phosphate Quartz REE-Yttrium-Thorium Salt Sepiolite Soda ash and...(Minniti, 1986; Viljoen et al .. 1986) fonned when quartz porphyry and leucogranite of the calc-alkaline...metamorphosed dolerite dyke swarms. Shear zones in the schist carry minor gold. Upper Sinclair Sequence equivalents...in 1-m-thick grey shale layers at the Klein Aub Mine (2% copper, 50 ppm silver, up to I ppm gold and...copper-silver deposit of the now abandoned Oamites mine {HohewarteMetamorphic Complex) (Lee and Glenister |
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—Interpretation sulpliide waters — Chloride water analyses Mine waters waters— Sulphate waters Oxidation of waters—“Carbonate...Metamorphosed 293 Processes involved The banded quartz-hematite (magnetite) ores— HemaCeneral character...veins in basic lavas General features The Kennecott mine, Alaska— ( ’opper sulphide veins in intrusive basic...kaolin — Prophylitization — Sericitization and vein quartz— Alunitizaiion— Metasomatic processes at Thames...Telluride — Silvcrton Colorado— General Arizona —Gold-quartz veins rhyolite in telluride selenide of |
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rocks — Acid sulphate waters in igneous rocks — Mine waters of sulphate type —Sodium carbonate waters...Fuller's placers — Detrital — Placer earth — — quartz deposits Detrital clay deposits Gold Origin and...amygdaloids The veins Mineral association Origin Mine waters Rock alteration Mining and smelting operations...Zealand —El Oro, Mexico — Gold-quartz veins rhyolite Argentite-gold-quartz veins — Tonopah, Nevada — The...Gold-alunite deposits — General features — Goldfield, quartz veins in andesite in telluride of region |
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NEW SOUTH WALES Cover photo: Photomicrograph of quartz-fibre vein, central area, Cobar. Frontispiece:...level stope in eastern lode, Mount Boppy gold mine. Quartz-filled net-vein fractures and brecciated nature...negative 0108) Bottom Right: Mount Pleasant gold mine, Cobar (Cobar Collection negative 0083) Bibliographic...Girilambone - Hermidale area Girilambone copper mine . Hartman - Larsen group of workings .. Bonnie Dundee...Budgery group Genesis Canbelego copper mine area Gold-Quartz Veins Muriel Tank gold field Battery Tank |
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Granger, and S. S. Adams 63 Gold and Uranium in Quartz-Pebble Conglomerates.D. A. Pretorius 117 Sediment-Hosted...cratons and from 3,200 to 2,600 m.y. elsewhere. Gold-quartz veins and Algoma-type banded iron-formations are...second-cycle partial melting of older crust. Gold-quartz veins in the greenstone belts are at least crudely...exceeded greenschist grade. Greenstone belts, gold-quartz veins, and massive sulfide deposits all diminished...content of marine placers diminished during the lower Proterozoic, possibly signaling the increased solubility |
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By Frank Rutley, Esq., F.G.S. 3. ~:Enclosures of Quartz in Lava of Stromboli, etc., and the Changes in...Author describes the existence of enclosures of quartz in a lava-stream at the Punta Petrazza on the east...rocks upon the enclosures, concluding that the quartz has undergone fluxion but not fusion, and has supplied...other rocks or minerals once associated with the quartz have been assimilated by the magma. 1 This paper...for a while to 20 ~ but lower down it increased to 32 ~ and 33 ~. [The lower part of the boring passed |
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44. c 1 3 .50 A. A natural occurrence at a coal mine in the (TL) Lvov-Volynsk basin, USSR. Achates. syn...832) Traite Min. 2, 126. A mixture of albite and quartz according to H.J. B rooke and W.H. Miller ( 1 852)...cryptocrystallinc varieties of quartz. 7 8 Aga Agate-jasper. var. of quartz. E.S. Dana ( 1 892) Syst....33- 1 230]. (TL) Villedicu Township. Temiscaming County, Quebec. Canada. Named for S.O. Agrel l. Agricolite...09. c 7.76 A . Z=2 [PDF 27-620]. (TL) San Carlos mine. Guanajuato. Mexico. Named for S. Aguilar. Agustitc |
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the claims already staked by mining engineering, mine valuation, geophysics, and engineering geology,...Tyler (Exploration for Iron Ores), Robert K. Warner (Mine Valuation), and Kenneth K. Welker (Rock Bursts)...in valuation. 19. GEOLOGICAL WORK AT AN OPERATING MINE 503 "Theoretical" or "Practical"? Place of Geologists...properly be devoted to the detailed study of a single mine is necessarily li1nited, and partly because of the...sizing up the future possibilitieswhether or not the mine or prospect is likely to grow up to be a larger |