 | | Report (issue) | | .............................. 29 Mineralized aone............................................. 31...sulfur, diaspora, avmnbe^gite (?), ztoayite (?), hematite, goethite, pyrite, rutlle(?) and very ssaH quantities'of...tbt breccias at the eastern end. the alnerallaed aone and the country rocks are sheared along two predominant...ridge of Cerro la $ls* appears to be a broad shear aone tlnrot^h which hydrotbeonaal emanatlcns gained acoeas...of the San Juan district which includes this area, says that the rocks in the district consist of varying |  | | Report (issue) | | »,*,,..».,.. .,.,37 Structural features of the district ««*.*«****, «r«,****.***»*,?5 Faalts ,,.,.,.,...^ourrt&in Pass district -.10 3. //*»' « Generalised pro-Caisbrlaa geology, ^nntain ia district, , ».. .....Pocket 4. Geologic mp of the leu&t&in ?aai» district »»».»... ..,* Pocket Roiuaded outcrops of gyerdts...cf linaral Hill, fros west 6*, ilcuctain Pass district, aho^isg- distrlbotlcn o^ veins and carbonate...Comity, California I^r J» C. Betasst&ia Fsss district is la a block of pre^asbriea rosks Ixttuodad 021 |  | | Report (issue) | | with groundmass of plagioclase, clinopyroxene and hematite. Phenocrysts are mostly plagioclase, and a considerable...groundmass consists of plagioclase, clinopyroxene, and hematite; most is dark gray, but quite a bit is oxidized...Groundmass consists of plagioclase, clinopyroxene, and hematite. HYDROTHERMAL ALTERATION Hydrothermal alteration...andeaitic volcanic debria and thin flower leea permeable aone, leaa Eeolitic alteration than in overlying unit |  | | Report (issue) | | -thickest; and most; extensive Tertiary unit in 'the district. It- is present throughout jaost of the area...neighbouring liuerfsno- Park and katoa Jl=asi?i district ¥ lUlYOLITi, PtkPIiYRY Tr This inijrusive foi'ss...is presumably clue to the oxidation of iron to hematite« Keithey the contact, of the smaller plug with...of Antelope Butte * JLAMFKOPiiYIiL Tl A narrow aone of en echelon Ifuaproph^^re dikes raciate out frosa...yellow resinous olivine altering to serpentine and hematite. ; dark bronzed-colored biotite books up to. £ |  | | Report (issue) | | Calsnine Copper veins Willemite * Smithsonite Hematite « 10 11 12 12 12 13 Fig. 1 o 2 > , - Shotting...southwestern part of the fault trace is composed of a fault aone that is silicified aid mineralized by veins of chalccsitec...silicates, calamins, and "idJJLeinite, and \s? hematite ..id qiiar1;z T*hich is~~~'':,~cut '*y., by a...Varginha fault the gangii ' . ..*V::'>V^ dnsrals hematite and q*uartz coiitained in the fault breccia sens...small percentage of the sine » orec Hsnigtite Hematite occurs in the northwestern part of the Varginha |  | | Report (issue) | | of Geoohemical Investigations in the Blackbird District ly P. C. Canney, H, B. Hawkea G. M. Richmond and...survey in the Blackbird cobalt-copper mining district. The district is in east-central Idaho, about 20 miles...geology of the district* Brief Outline of Geology by J, S* Vhay The rocks of the district consist mostly...paragneisses cut across the northern part of the district* Acid porphyry dikes and strongly metamorphosed...Yellowjaoket rocks* The important part of the district economically is the Blackbird structural block |  | | Report (issue) | | DEPOSITS OF THE WHITEPINE AREA, TOMICHI MINING DISTRICT, GUNNISON COUNTY, COLORADO by Charles S. Robinson...of the ore depoait* ..............*...... 143 Mine* and prospect* ......................... 147 Akron............. 139 * May, Mazeppa, and W. and A. mine* ......... 191 Morning Star ....................the White pine area 3. Sketch of the Spar Copper mine 1. Geologic map and sections of the White pine...Akron level* Akron mine In pocket 5. Geologic map of the Akron tunnel* Akron mine In pocket Geologic |  | | Report (issue) | | Equilibriua p(H^) for a pure H^O system and a hematite system for sa looted tenperaturea and pressures...constants with tcnperatur© for the Rasnetit »-hematite and watsr reactions 175 FIGURE! Figure UU ...composition of a parent ore fluid. Prixaary hematite IB enriched over na,:oetite In rooka of metaaediaentary...counties, N. J. Dover district (Sims, 1955) and. Sterling Lake-Ringwood district (Hotz, 1952) are also...contact soae but the exact relationships within tho aone are difficult to interpret. The hanging wall rocks |  | | Book (edition) | | —Interpretation sulpliide waters — Chloride water analyses Mine waters waters— Sulphate waters Oxidation of waters—“Carbonate...Distribution Part played by organisms The oolitic hematite ores The ('bnton oree^ The Jurassic iron ores...ores of Ixirraine — — — The — odlitic — — hematite-clmmosite-sidente ores of Newfoundland — — ...Metamorphosed 293 Processes involved The banded quartz-hematite (magnetite) ores— HemaCeneral character, distribution-tite...minerals Origin Residual iron ores (limonite and hematite) Origin Classi. — — — — — — — — — CONTENTS |  | | Report (issue) | | literature. An example was with the Osamu Utsumi mine in Brazil. This deposit has been reported in the...includes the deposit or occurrence name, the mining district, the tectonic setting, the geological type, status...producer. Mine A mine is a deposit from which ore is currently being recovered. Depleted Mine A depleted...depleted mine is, a mine-out or depleted ore deposit with insufficient Reasonably Assured Resources recoverable...support further production. Inactive Mine An inactive mine is a closed mine with remaining Reasonably Assured |  | | Report (issue) | | greatest individual increase that of the Copper Queen mine at Bisbee, Ariz. The following table shows the production...27, 1905; and information furnished the writer by mine owners and managers. 93 94 CONTRIBUTIONS TO....................... Imported into Europe from Japan....:.................................... Imported......................... Imported into Asia from Japan and Australia............................. Imported...is shown in PI. III. The Butte, Mont., copper district is the greatest silver-producing camp of the entire |  | | Book | | commercially. The mines were 'The Littke Wonder’, the mine that made Australian Opal famous in 1889. Mintabie...worked by Berkelman and Lambert in the Barcoo district on Bulla Creek. Some of their opal was displayed...time of Wollaston’s visit, Bridle was working a mine on Stoney Creek which was producing high-quality...Wollaston to Charlie Whitehead, who was working a mine on Breakfast Creek, and it was here that Wollaston...O Fe,O, TiO, ZrO, Calcium Oxide Sodium Oxide Hematite (Iron) Titanium Dioxide Zirconia 0.05% 0.002% |  | | Report (issue) | | Srednogor1e as weJ.l ( F1g. 3 ). 4. In the Srednogor1e aone а long1tud1nal petrocheш1cal zona11ty could Ье ...6- approxilllate boundar1••- otUa. SredD.010:rie aone; ou~ropa ot Upper Cretace.ous eth81т• 88pUU8J е-...t1on ( 169 з.) о:! hyaloclast.1 ~ев and hy&l.iJt"• aone o:r Pillow-1.aтaa :froathe- _ваше_ vo1cano ( wi... Oxyde Quartz Magnetite Scheelite Ferberite Hematite Quartz Chlorite Epido~e T,-pomorphic elements...PegJlfatxt1c w1th,.torшat1on ot the main rocktorшJ.ng mine"I::als and the ассеввоrу zircon, ti tan1 te, apati |  | | Report (issue) | | ^he surface of the HHawthorn formation, Olg Colony mine, American Cyanamid Co», land-pebble phosphate field...and fine phosphate in the landpebble phosphate district, Florida. ........... 27 Mode of occurrence...magnetite deposits in Sweden and the Iron Mountain hematite deposits in Missouri (thought to bo weathered...of the district containing 27-30 percent *2°5° Hie remainder in the southern part of the district* f/ All...The surface of the Hawthorn formation, Old Colony Mine, American Cyanamid Company, land-pebble phosphate |  | | Book | | ix Masanori Kurosawa, Masao Semmoto and Toru Shibata Mineralogical Characterization of Early Bronze...Semmoto 2 and Toru Shibata 3 1 2 3 * Citation: Kurosawa, M.; Semmoto, M.; Shibata, T. Mineralogical...Tsukuba, Tsukuba 305-8572, Japan The Ancient Orient Museum, Tokyo 170-8630, Japan; semmoto@orientmuseum.com...com Matsudo Museum, Matsudo 270-2252, Japan; s-toru@jcom.zaq.ne.jp Correspondence: kurosawa@geol.tsukuba...Tokyo, Japan) with an acceleratples were performed by using a SEM-EDS (JSM-6010LA, JEOL, Tokyo, Japan) with |  | | Report (issue) | | International mine Location flistory and production Geology ana mine description Queena Taste mine Location...Geology and mine descr1gt;ion Big Shiner mining area Location Histjory and production Laat Chance mine Big Shiner...Shiner mine Mairland mine Prospectn 146 146 150 155 159 363 165 g : 176 177 177 177 11 1g9 182 1%...203 203 204 206 206 206 207 207 208 208 Luna mine Locatlon History and production Oeology and mlne...mlne Location Hlatory and production aeology and mine description Prospect# ' Summary o f ore deposlte |  | | Report (issue) | | nomenclature. ABSTRACT The Castrovirroyna mining district lies in the Andean Cordillera of South Central...Supervene silver ores vere first mined. Currently the district produces about 20,000 tons of laad*sinc ore and...and 50OO tons of silver ore annually* The district: Is underlain by Tertiary andesitlc rocks interbedded...vestermaost veins at la Virreyna* In tha center of the district, around Caudalosa, lead sulfantiiaonldas are the...pattern of vallrock alteration throughout the district grades from silicification and scricitization |  | Reid, K. D., Ansdell, K., Jiricka, D., Witt, G., Card, C. (2014) Regional Setting, Geology, and Paragenesis of the Centennial Unconformity-Related Uranium Deposit, Athabasca Basin, Saskatchewan, Canada. Economic Geology, 109 (3) 539-566 doi:10.2113/econgeo.109.3.539 | Journal (article/letter/editorial) | | tik Key L. West Bear W la ol on st te Pe Mine, Developed Prospect FORMATIONS OF THE ATHABASCA...shear zones: BB = Black Bay, BLSZ = Black Lake shear aone, CB = Cable Bay, GR = Grease River, H = Harrison...rock. Nearby drill holes intersected chlorite, hematite, and anomalous U concentrations in the sandstone...meters to tens of meters. In the upper part (“Hematite zone”), primary textures are destroyed and Fe...presence of the chlorite group mineral sudoite and hematite and retains many of its primary textures (Macdonald |  | | Journal (article/letter/editorial) | | under it; and the pastes, composed of quartz, hematite, potassium feldspars and calcite. Honey glazes...orangish-reddish color of the pastes was provided by hematite. Although the tiles were found in three different...etechniques pe—engobe; ppe—engobe; ppgpe—engobe; aone. g geon eapplied eeach a5ppoa5one. pg pop g520 ae—engobe...p eg g eaze p--y p p--e—engobe p✓ p g pe—engobe aone g g eapp pLGre— a--✓✓ g pp a--✓ eone p g p p g g...a✓ -try -23.8 -ec✓ - ana -g -aand -ag -ragmen -✓ -aone try try try try try try ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ |  | | Report (issue) | | of Highway Freebern mica mine 8 y Mobey (Burnham) mine 9 Enterprise mine 10 38 38 Sand Road (Card)...(Bedford) mica mine 12 13 14 14 1D 1 16 16 17 Richardson feldspar mine Glendower iron mine Road-cut at...Hickey-Murphy lead mine Road-cuts at km 16.7, Westport Road McLaren phosphate mine Long Lake blue calcite...calcite occurrence Long Lake zinc mine Gabbro quarry Road-cut on Highway 38 at km 57.6 17 brucite occurrence...occurrence 18 Eagle Lake (Blessington) mine 18 Sharbot Lake road-cuts on Highway 19 ie, 38, kr 72 |  | | Report (issue) | | Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York GEOLOGICAL SURVEY...Deposits of the St. Lawrence County Magnetite District Northwest Adirondacks New York By B. F. LEONARD...__ Rocks of the St. Lawrence County magnetite district. Metasedimentary rocks and migmatites____._ Pyroxenic...of occurrence in the district ____________ Mineralogy of skarns in the district-..._______ Nomenclature...__________-_-_-_---_----Hematite _________-_--------------Primary crystalline hematite.____ Martite____.. |  | | Book | | fale ‘> e166 Je (eter 6) 6, er 6 ue fe Prescott mine SUGter G6) wi 4\Fe)0\ Bilolses wiiel elie) eee)...og | ee Se ee Eo Se Cee CORUM SROIee eee Coehill mine aule nia sels hey 92 2 eniwi SEM SECT 2) See...Atikokan mine, general view of ridge. Atikokan Open-cut, ” ” 9a ..........00..eceeeeeees mine.........2i— » 3. y bottom,» Leckie vein, not ‘Leckie mine.” ». known, not top, » ~ shown.” 38 — in...two mines, Both are situated in the Michipicoten district, the Magpie and the Helen. in Ontario, and both |  | | Report (issue) | | of the Southeast Missouri base metal and barite district, by A. V. Heyl..................................WITH ULTRAMAFIC AND MAFIC ROCKS Exaalne bssel aone J r up to 1 percent combined Nl+Cu up to 200«106...structures containing Pags 3 Examples^ Skelletaa District, Sweden Hljura-Kotalenti Belt, Finland Thompson...the Langmuir deposit in Canada and the Kambalda district in Australia. Favorable targets for domestic deposits... Examples are the Thompson district in Canada and the Skellefte district in Sweden. Favorable target |  | | Report (issue) | | Petrography and mineralogy of selected core samples and mine dump samples, and electron microprobe analysis of...metal distribution in overburden in the Glendinning Mine-Trough Hope area 71 Appendix VII Rapid field estimation...concentrates 4 3 Geology of the area around Glendinning Mine 6 4 Tight, gently plunging folds exposed in the...vhich vein. A section of the mine is recorded in the margin of a Leadhills mine plan dating from the mid-nineteenth...tonnes of antimony is recorded from Glendinning Mine, the main periods of production being 1 793-1798 |  | | Book (edition) | | edition of the work, aud to soeh additionB pre- on Mine- make to it as later discoveries might render...faces of a una inU be oalled the * azia* of the aone. Hitfrswt each otheTi op * A 19. Let kkl^pqr... w = =a Zp anr will be the symbol of the zone aone-drde through the 20. A face may bo coiumou to two...21. Let #019 + ui* Anj vi; + fiace in the aone uvw. = wif? Then, O. or negatire whole numbers...symnietrically arranged with form The respect to aone-cirdea through ereiy two of the poles of the form |
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