 | | Journal (article/letter/editorial) | | Depositsof the La CrouzilleDistrict(WesternMassifCentral,France)' GeologicandFluid InclusionStudies JACQUES LEROY...subjectof this study (Margnac and Fanay mines) are locatedin the Saint-Sylvestregranitic plutoniccomplex,...Limoges(Haute-Vienne). The Saint-Syh'estreplutonin its entirety and the Saint-Sylvestregranite in particular...observationsmade in the mines along the contact zone betweenthe Brame and Saint-Sylvestregranites (Peny... The existence of two graniticfacies(Brame and Saint-Sylvestre)is dueto magmatic anddeutericprocesses |  | | Catalog/List | | □ ens . .L4.25. ,pure Accocpanied by intcrforrn o! bladed 4. ACT1;;01I'rE. Lcvant Zawn,':'rewellard...my-white cleavage fragments o! massive crystalline material. A r&re nuo-phoaphate o! aluminium anå lithium...rhombic xtls of biscuite-colour. 2!-x2x1", .c12.;o. 16. ANTIMONITE. Felsobanya,Rumania. Two very pleasant...3x2x1½", ls10.00. 21. APATITE. Snaru.m,Norway. A pile o! semi-transparent ,sky-blue to creamy white,doubly...Gorm~all. Odd but attrac tive diver;;ent composite o! bladed xtls ,now enveloped in glistening,dark-red |  | | | | □ ens . .L4.25. ,pure Accocpanied by intcrforrn o! bladed 4. ACT1;;01I'rE. Lcvant Zawn,':'rewellard...my-white cleavage fragments o! massive crystalline material. A r&re nuo-phoaphate o! aluminium anå lithium...rhombic xtls of biscuite-colour. 2!-x2x1", .c12.;o. 16. ANTIMONITE. Felsobanya,Rumania. Two very pleasant...3x2x1½", ls10.00. 21. APATITE. Snaru.m,Norway. A pile o! semi-transparent ,sky-blue to creamy white,doubly...Gorm~all. Odd but attrac tive diver;;ent composite o! bladed xtls ,now enveloped in glistening,dark-red |  | | Book | | Coste A. (Limousin, France), Cuney M. (granites, France), Dardel J.RM. (France), Ewers G. (Pine Creek...Albitized sediments .................. . 69 Type 3 Vein ................................... . Subtype 3........................... 137 5.2 Examples of Vein-Type Uranium Deposits (Type 3, Chap. 4) ..........5.3.1 Intragranitic Vein Uranium Deposits: Limousin/La Crouzille District, France. . . . . . . . . . .... . . . . . . . 5.3.2 Perigranitic Monometallic Vein Uranium Deposits: Pfibram District, CSFR ...... |  | | Journal (issue) | | Bearss, and myself) decided to visit the old Lion mines on Lion Mountai n located west-southwest of Jackson...We got some neat garnets from Asbestos and Mont Saint Hilaire oddities here, and they had vesuvianite...gentleman named Glenn Archer from Western Australia who mines the gaspeite (nickel carbonate). We talked a little...numbers in the abandoned cop- Marc-h 2001 per mines of Upper Michigan.) The general consensus was that...Let 's start with the notorious Mathias Rheinlander o f Mikon. As usual. his room was filled wi1h nice, |  | | Book | | of some countries, production trends, a nd possib le future developments are discussed in the text where...and Witherite, Fluorite, Magnesite and Brucite . .. .. ... . Barile and witherite. Fluorite. Magnesite and...who seized mines rather than discovered and explored them, and thus production from the mines, commonly...areas of Porcupine and Kirkland Lake, Ontario. G o ld has always been a lure which took men i11to the...has always been greater than that o f a11y other mineral product. H o wever, the i11f/11e11ce of gold has |  | | Book | | ERAL The Rapid-Identification System 8 Example: Fluorite 10 EXTERNAL SHAPES OF MINERALS 11 Structure of...Mohs' hardness, and specific gravity. Example-Fluorite Rapid identification of a specimen is often possible...thin , transparent platelets. The streak color of fluorite (see page 10) is always white , even if the mineral...devices 1 2 3 4 5 6 7 8 9 10 talc gypsum calcite fluorite apatite orthoclase quartz topaz corundum diamond...will always produce cubes; calcite: rhombohedra; fluorite : octahedra. The cleavage angle (the angle between |  | | Journal (article/letter/editorial) | | radioactive pegmatites occur along with numerous quartz-fluorite veins. Petrographically, typical rocks consist...main accessory minerals are zircon, allanite, fluorite and iron oxides including hematite. The Hadb-Aldyaheen...LOCATION 28" BOUNDARIES FIELOS SHONKINITE PROVENCE i 26 ~ ! t-f 24 ~ L~ '.':-;~h 'L 1 / i...minerals; fluorite zircon, magnetite ilmenite and hematite are always present. Massive quartz fluorite veins...(1978), defined as + 6 % o < 51sO < + 10~ Peralkaline igneous rocks with 5180 > 10%o are with Taylor's class |  | | Report (issue) | | (CREGU) M Cuney B Poty (Joint project leaders, France) A Bourguignon M Brouand M Friedrich B Guineberteau...Geochemistry Series r· NCGDC • ��CH�VIE COPV ID)(� �(O)T �EMOVlE Granites, metallogeny, lineaments and rock-fluid...1EU 11'• 0 I 7 9 3 -4 I 1500 Telex 444293 ENVRF. o Fax 01793-411501 .I Printed in England for the British...and AJ W McDonald 3 1 The Western Marche granite, France 3.3 J L Vigneresse and M Cuney 54 The Fichtelgebirge...Hercynides or Caledonides had no knowledge of the g e o logical setting or geochemical characteristics of |  | | Report (issue) | | BARIUM DEPOSITS • 1N ENGLAND & WALES • BARYTES I o WITHERITE 0 Ntwc�: e .�--� ��•�1 •• • • Appl(lby+...···········..···•·····..········--··--·...,......o.....................,............,..................Alston }1Ioor ( Cumberland) and 1·1est Allena.o..le (1,rort11111nbcrl2..nd) ...................... 2L...················ 64 B. Lc.. nchestcr and Chester-le -Street arec"..S ..................................Stainmore .................................. 72 cnsleydo..le ro..ledalo nnd 8' .. ,� r ...................... |  | | Book | | INTRODUCTI THE GEOLOGY AND CHEMISTRY OF MINERALS OF THE W O RLD by CHARLES A . SORRELL Professor of Ceramic Engineering...(for accurately measuring angles between faces of o mineral ' s crystals). During that century most of...evidence of having been formed by metamorphism (p. l O); variations in composition of pre-existing sedimentary...content Basic .,. N 4) -... --... •. • ·u ... O 0 Cl a..~ > .,, :, Granite Diorite Gabbro...drastic change in the bu lk chemica l composition o f a rock that often occurs during meta morph ism. |  | | Report (issue) | | oorcll Sunvov, IJNrvnnsrry oF YrRGrNrA, Crrlnr,omrsvrr,LE, February, 1918. Gouernor Westmoreland, Daa,is, Ch...CREEK, YIRGINIA. Mr. A. C. Ledoux ancl Professor W. O. Crosby; and to Mr. Moses Joy, of New flaven, Conn...identified by Professor Armstrong, of Washington College,o Lexington, Va.r'in 1846,b and it is reported that...Exposition. The Virginias, vol. 5, p. 196, 1884. .6 o 1 I l I I ' GEOLOGY. 3 district in 1885....1886, when litigation, causerl the closing of the mines. As far as known no shipments were made, but about |  | | Book (volume) | | the Geophysical Division of the U.S. Bureau of Mines (14) and drilling by the Bureau (12). A preliminary...of The Mineral Resources Office, U.S. Bureau of Mines, Denver. I am indebted to Columbia Mining Company...Columbia Iron Mining Company, now with U.S. Bureau of Mines. Bates McKee, University of Washington, shared in...295 72,136,297 Source of Data: U.S. Bureau of Mines. The Stripping Limit The fact that most of the...through gray to green. The thickness ranges from O to about 3000 feet, the variation being due primarily |  | | Book | | ABOVE: Metallic effect on Blue John stone TOP: Five Vein 3. The Veins of Blue John Stone The diversity...bed. This kind of void lining is called a "pipe vein". There are fifteen separate named veins of Blue...colours and tyles As miners followed a specific vein, the patterns and colours gradually changed as they...example of this is the Miller Vein, while Old Tor Vein and Winnars One Vein can occur very close together...colours and pattern . 8 9 New Cavern Vein 10 There are al o vein patterns for which the location is |  | Finch, John Wellington, Bateman, Alan M., Butler, B. S., Loughlin, G. F., McLaughlin, D. H., Singewald, J. T. Jr. - Eds. (1933) Ore Deposits of the Western States. The American Institute of Mining and Metallurgical Engineers, New York. | Book | | Edited by ·ruE L1NDGREN , ·ou:ME Co.,nll'M'E:E ON J O H X W E LLINGTON 1-'lN'CH, Chairma,i :\LAN M. BATEMAN...BATEMAN ij. D, U. ~IC LAUGllulX S. OUTLER O . F. uO UGHLIN J. T. S IXGEWALD, JR. With Contributions...express-ion of their appreciation and admfration FOREWORD O honor the name of Waldemar Lindgren by this dedication...intellect and kindliness of spirit that have bound t o him a host of friends, some of whom have joined in...conlributc. The general purpose of this volume has been t o give a present-day interpretation or the ore deposits |  | Imai, H., Lee, Min Sung, Iida, K., Fujiki, Y., Takenouchi, S. (1975) Geologic structure and mineralization of the xenothermal vein-type deposits in Japan. Economic Geology, 70 (4) 647-676 doi:10.2113/gsecongeo.70.4.647 | Journal (article/letter/editorial) | | Geologic Structure andMineralization oftheXenothermal Vein-Type Depositsin Japan HIDEKI IMAI, MIN SUNGLEE,KOHEI...AND SUKUNE TAKENOUCHI Abstract $n-W-Cu-Zn-Pb-Ag vein depositsin Japan, belongingto xenothermalclass,...Cretaceousor early Tertiary. The Akenobe,ikuno, and Tada mines in westernJapan and the Ashio mine in easternJapan...cauldron subsidence) of the granitic magma. The vein materials at the Akenobe mine are as follows: Ore...etc. Gangue minerals are quartz, topaz, apatite, fluorite, orthoclase, chlorite, calcite, rhodochrosite |  | | Journal (article/letter/editorial) | | luster. The interior was unaltered. (11) Polybasite. Vein quartz with veinlets oi silver minerals, cerargyrite...(13) Ffuorite. A mass of transparent crystals of fluorite, aggregating 3" X|lh" )(t" , rvith purple color...color, coated in places with minute grains o{ sulphide minerals. Crystals cubic, often grown together. ...sulphides were little afiected. (14) Quartz. A group o{ transparent crystals 5,,X3,,X3,, on a base of sandstone...metallic to earthy brorvn. (19) Calcite. A mass o{ vein material with crystallized calcite of yellowish |  | | Report (issue) | | 65 75 79 85 91 URANIUM IN VEINS Uranium-bearing vein deposits in the United States, by Donald L. Everhart___________...silver, zinc, and gold minerals; with sulfides and fluorite; or with carbonate and silica gangue minerals...sulfides. In the Thomas Range, Utah, are uraniferous fluorite veins. and pipes of ore grade. Secondary uranium...for the future. · URANIUM IN VEINS Uraniferous vein deposits in the Western States are mainly Tertiary...base-metal sulfides or with fluorite, is the principal uranium mineral in vein deposits at depth. Supergene |  | | Report (issue) | | of titanite ...................... 96 Origin of fluorite ........... _........ .' ............ _......... . . . . . . . . 99 .Both types of vein filling in the same vein zone ......... ______ .................. __ . _.............. _. 101 Relations of the vein belt to the porphyry belt ........... ______ . _............... . 108 Amount of displacement along vein faults ...... ·............................ . 108...109 Summary of dynamic history of belt ......... o . . . • . • . • . • • • • • • • ·• • • • • . • • |  | | Report (issue) | | Ore-deposits-Colorado-Central City district. 3. Mines and mineral re. sources-Colorado-Central City district...Sylvanite _________________________________ _ Fluorite ______ ----------------~-----------Autunite and..._ Enargite-bearing veins __________________ _ Fluorite-bearing veins __________________ _ Uranium-bearing..._______________________________ _ Page Paragenesis of vein minerals _____________________ _ Uranium stage ..._ Irregularities along a fault ______________ _ Vein intersections or junctions ___________ _ Explosion |  | | Book | | and Helen K. Gray the collection of the 7 z o T. n m PreTinger v Jjibrary p San Francisco...Dickinson and R. Sprigg, South Australia Department of Mines; H. H. Adler, Margaret Cooper, Helen V. DeSanctis...Carlson, M. H. Kline, A. A. McKinney, U. S. Bureau of Mines. The author also wishes to express his appreciation...Atomic Energy Control Board of Canada. Department of Mines and Technical Surveys, Canada. Eldorado Mining and... ACKNOWLEDGMENTS Department of Mines, South Australia. Commissariat de FEnergie Atomique, France. The author is further |  | | Journal (article/letter/editorial) | | andmanycourtesies extended by the operators of the mines visited. LEAD-ZINC DEPOSITS OF THE UPPER MISSISSIPPI...MississippiValley lead-zinc district and the locations of mines from which sampleshave been collected for study...stratigraphic sequence, notablythe Guttenbergmember(oil rock) o[ the Decorahformationand the Quimby'sMill member(glassrock)...havebeeninvestigated.Vein materialsfrom the Crawfordand Tennyson Mines havealsobeenstudied,but theselatter minesare now...scatteredsampleswere available. FORI•MEMBER MINERS' LITH•i•GY T,O. TERM,.OLOO¾ T.,CK.ESS KETA IRANGE oF SHALE SaALE |  | | Journal (article/letter/editorial) | | milling method inclusions for from of Chemistry, O-okayama, Tokyo Meguro-ku, of fluid minerals KOHEI...Samplesused in this study were hydrothermalvein quartz, fluorite and arsenopyrite. Under suitable conditions,gases... The conditions found adequate for quartz and fluorite samplesfrom the Takatori mine are as follows;...adsorbed on the powderedsample. For quartz and fluorite samples,isotopic compositionsof extracted gasesincludingH20...quartz crystal from a druse (ca. 15 cm cube), and a fluorite crystal with two-phase fluid inclu sions, both |  | | Journal (article/letter/editorial) | | separated events. High-temperature silicic (quartz-fluorite) and intense potassic (quartz-K-feldspar-molybdenite)...succession and abundance of mineral assemblages and vein types. Certain genetic aspects of the porphyry system...Porphyry Precambrian Silver Plume Granite W o re o d s ek Fa ds o Wo Woods Mtn. Stock 39° 45' Englemann...Feldspar → Quartz > 5 vol. % Quartz ±Molybdenite ±Fluorite veins FIG. 4. Simplified present-day view of...alteration, the limit of >5 vol percent quartz ± fluorite ± molybdenite veins, the outline of greater than |  | Runyon, Simone E., Seedorff, Eric, Barton, Mark D., Steele-MacInnis, Matthew, Lecumberri-Sanchez, Pilar, Mazdab, Frank K. (2019) Coarse muscovite veins and alteration in porphyry systems. Ore Geology Reviews, 113. 103045 doi:10.1016/j.oregeorev.2019.103045 | Journal (article/letter/editorial) | | Science Building, Edmonton, Alberta T6G 2E3, Canada O O F * PR Declarations of interest: none. JO ...porphyry Cu ± Mo systems, as well as in and above the O ore bodies in porphyry Mo-Cu systems, and it is compared...compared to coarse hydrothermal muscovite O (greisen) in lode Sn-W-Mo systems. Basin and Range extension...and apatite, and rare accessory chalcopyrite, fluorite, molybdenite, wolframite, and scheelite. Coarse...late 2. O exsolution of fluid from the same crystallizing stock or batholith. INTRODUCTION O Exploration |
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