 | | Journal (article/letter/editorial) | | age in the Cerro de Pasco-Casapalca-Morococha district of Peru has almost constant composition, 'suggesting...crystallised and commonly segregate towards the lower margins of the basic igneous bodies where they may...granitic stocks, whereas lead and zinc sulphides, with lower levels of thermal stability, are normally driven...granitisation and ore formation. Thus, in the Skellefte district of North~rn Sweden, where most of the ore deposits...concentrated, may be mobilised and transported to sites of lower pressure such as fractures, shear zones or the crests |  | | Book | | and Technology Brennhausgasse 14 09596 Freiberg Germany Library of Congress Cataloging-in-Publication...for Geosciences and Natural Resources Hannover, Germany Preface The extraordinary growth of the computer................ 62 3 .2.8.1 Letneye, Dombarovsk District ....................................................... 62 3.2.8.2 Komsomolskoye, Mednogorsk District ...................................... 64 3.2.8.................... 65 3.2.8.6 Bakr-Tau, Baimak District, Bashkirian Republic ....................... 66 |  | | Journal (issue) | | c5anvw,((e,vMintrafs Mineral Dealer & Mine gent Levant Gallery Lower Boscaswel I, Pendeen, Near Penzance...Minerals 35 37 FRONT COVER Caledonite. Red Gill Mine., Caldbeck Fells, Cumbria. Largest crystal 1.25... S. Africa, Switzerland, Belgium, Holland and Germany. Necessary to this development, to take up the...associated with veins worked in the Vigra and Clogau mine, and was more than likely a trial for gold in the...minerals is very similar to that at the Tynebottom mine, near Alston in Cumbria. Further studies are now |  | | Journal (article/letter/editorial) | | (Teller Co.), Colo., this past summer some friends of mine found some interesting specimens which turned out...and are quite interesting. They came from the King Mine near Cripple Creek." CONNECTICUTâA very nice specimen...any better material ever came out of the tungsten mine in Trumbull. Since this is a very interesting discovery...covellite, with chalcopyrite and chalcocite, were found in the old copper mine at Canton, Cherokee Co., Ga...has been mined with lead ore in the Wood River district, Blaine Co., Idaho. ILLINOISâThe following note |  | | Report (issue) | | HYDROTHERMAL AND MAGMATIC MINERAL DEPOSITS Page Magma, Mine,;Superior (oo. ciges Rocttactek ors eno os es snl...ameter: ee a SGI cose oncoce aes hot PIAS eA ee Germany=Czechoslovakiak |= hoc aeee eee ss ea ere TZ SE6DIT...mines of which a district is composed but rather that the geological conditions from one mine to another within...within the district are so generally the same that what is said of one mine will be true for the others...hiierte ai Germanyiayne aie) eb ete eee 1 + Germany-Czechoslovakia............. 1 Call Pere ltr |  | | Journal (article/letter/editorial) | | Shadedareasshowthe approximatesubsurface limits of bornite-chalcocite mineralizationasindicatedby diamonddrilling....One orebody The Number One orebodylies in the lower 11 to dolomite. 17 m of a mass of dolostone breccia...bornire) Phyllite Fault, dashed where inferred Mine workings: I i o Drillholes âą1 II I âą , ,...carrollitc, and chickandBarnes,1984; Bernstein,1986a). chalcocite;and (3) a core zone containing15 to 90 percentbornitc...beingthepredominantmineral.Onlyin smallregions manitc,and chalcocite-digenite. The generaldistri- of the mostcopper-richsectionsisit |  | | Journal (article/letter/editorial) | | oxidation-zone,spheresof goethite lepidocrocite,chalcocite, covellite,anglesiteor cerussiteof the samesizeand...(Fig. 23) which was convertedto anglesitein the lower part of oxidationzone. X 800. Mount Isa. Fie. 26...straightoutlines(pseudo- morphicafter marcasite). x 200. Rammelsberg, Germany. Fig. 28. Sphalerite (darkgray) hasreplaced...(white). X 800. See alsoo, Plate 4. Ramreelsberg,Germany. SOME NOTES ON MICRO-PSEUDOMORPHISM. 359...leaving some pyrite remnants. In Fig. 19, made'at lower magnification,the right side shows'galenagrains |  | | Journal (article/letter/editorial) | | A. RAttER Institute of Nuclear Sciences, DSIR, Lower Hutt, New Zealand M. L. JENSEN University of Utah...Several copper-lead-zinc sulphide deposits occur in Lower Palaeozoic volcanic rocks in West Tasmania, the...it is suspected that the succession overlies the lower part of the volcanic sequence but may interdigitate...tin-bearing granite stocks. Geology of the Mount Lyell Mine The Mount Lyell deposits lie in a longitudinal zone...2, 3). This contact is overturned in much of the mine area so that the volcanic rocks structurally overlie |  | | Book (volume) | | Rogers, . . . for in the lower column read in the column headed "lower." for c = qo' cos u sin X :...up 165 for to Temiskaming Cochrane district read district. Ref. 4, under oruetite, add See also... for VVakatipu district, CoUingwood, 294 Zealand read Wakatipu 303 line district, 8 in synonomy...and the corresponding citation (Hudson Bay 309 mine). in Ref. 4, line Z, for 670 read 676. 310 in...P, for figure, for the lower face the lower face read R, and for the lower face-labeled n read N. |  | | Journal (article/letter/editorial) | | 006 mm spheres,consisting merelyof bornitcor chalcocite, do not showtransitionsto larger bodiesof the...composedinternally, as those of group 2 of bornitc or chalcocite, but borderedby a few pointsof chalcopyrite.In...In the main they consistof bornitc or chalcocite,the outer rim howeverbeing occupiedby extremelysmallchalcopyrite...depositswherethesefossil-bacteria wouldbe abundant.In Rammelsberg howeverthe diameterof the pyrite spheresis about... Takingiritoaccount thedeposits of Meggen, -Rammelsberg andthe"Dachklotz;"overlyingthe coppershale,' |  | | Journal (article/letter/editorial) | | SEDEX/VMS deposits in the Rhenohercynian Zone, Germany Rammelsberg: Lat. 40°30â N, Long. 6°50â E; Meggen: Lat...districts: all mines abandoned. Harz Mountains: Rammelsberg (968â1988) and Einheit (1889â1990); eastern Rhenish... PGE, Tl, Te, Ba. Former annual production: Rammelsberg (1988) ca. 55,000 t Pb+Zn, 3,500 t Cu, 22 t Ag;...Einheit (1973) ca. 56,000 t S. Total resources: Rammelsberg: 27 to 30 Mt @ average 14%Zn, 6%Pb, 2%Cu, 20%BaSO4... galena, chalcopyrite, barite, arsenopyrite, chalcocite, covellite, tetrahedrite-group minerals. * e-mail |  | | Journal (article/letter/editorial) | | began in Middle Carboniferous and continued until Lower Permian (Tazhibayeva, 1964). The principal ore-bearing...and conglomerates are bornite, chalcopyrite, chalcocite, occasionally galena and sphalerite; the subordinate...cupriferous hydrothermal solutions. UDOKAN The Lower Proterozoic Udokan series is the bearer of ore in...ore minerals are chalcopyrite, bornite, pyrite, chalcocite, sphalerite, and others (Bakun et al., 1958;...Galena Chalcocite Chalcopyrite Chalcopyrite, sample A Bornite Bornite, sample B Galena Chalcocite Chalcopyrite |  | | Catalog/List | | .... . Utah Toelle County, Gold Hill, Gold Hill mine --=.rransparent micro crystals on limonite gossen...silicate' Arizona Pima County, Ajo, New Cornelia mine Sky blue micro xls and coatings on monzonite . ...silicate CLEAVELANDITE Virginia Amelia, Rutherford mine #2 Lustrous white twin xl groups, minor muscovite...ALLEMONTITE An intergrowth of arsenic and antimony Germany Harz Mountains, Andreasberg Rich gray botryoidal...Lead telluride âą Colorado Saguache County, Klondike mine Brilliant metallic tin white cleavable mass in quartz |  | | Journal (article/letter/editorial) | | sequenceis: pyrite > pyrrhotite> chalcopyrite> bornite> chalcocite. Variations in Sa2/Saâą distributions among naturally-occurring...-34.5 -33.6 Metacinnabar HgS -11.06 -10.2 Chalcocite Cu2S -19.1 -20.7 Acanthite Ag2S -7.7 -9...hawleyite Metacinnabar ZnS CdS HgS 794 746 726 Chalcocite Acanthite Cu2S Ag2S 555 528 Table 3. Ladd... whichis the energynecessary salts,argentite,chalcocite,and pyrrhotite. 60 DONALD 7. BACHINSKI Koren...Herzenbergite Galena (Covellite) Metacinnabar Chalcocite Stibnite, ' bismuthinite Acanthite (pyrite |  | | Journal (article/letter/editorial) | | zuriickgeftihrt. Introduction The Mt. Lyell copper district, situated on the west coast of Tasmania, is one...yielded much new information on the geology of the district and has also p r o v i d e d an o p p o r t u...Lyell mine area is illustrated on the accompanying geologiThe geology of the Mt. Lyell district has been...in Mr. Read volcanic arc, which extends for some lower argillaceous members of the Gordon Limestone formation...pronounced along Owen portions of the schist-con~ Lower glomerate contact. The major Owen structural features |  | | Book | | Design: Hansbernd Lindemann, Berlin. Printed in Germany. Preface More than thirty years ago, microprobe...Chapter 1 Introductory Concepts Chapter 4 Mantle and Lower Crust Derivatives Chapter 5 Replacement Patterns...hydrothermal veins. (ii) The granite intrusion mobilized lower crustmantle material due either to deep seated granitization...shales, hornfels and granites of the Harzburg district, showed that the amount of boron decreases from...segregation also takes place under considerably lower temperature conditions. Augustithis has described |  | Clark, A. M., Smith, D. A., Symes, R. F., Tandy, P. C., Hart, A. D. (1995) Catalogue of Type Mineral Specimens in the Natural History Museum, London - With an appendix listing mineral species and varieties originally described from the British Isles. Natural History Museum, London. | Book | | the description of the species nominates Socrates mine, Sonoma County, California, as the type locality...doubt exists we have indicated the latter, as a lower order of type status. I [ Only recently has the... Aerugite (Neotype) BM 1963,00481 South Terras mine, St-Stephen-in-Brannel, Cornwall, England R.J. Davis...34. Afwillite (Cotype) BM 1925,00080 Dutoitspan mine, Kimberley, South Africa J. Parry and F. E. Wright...277. Agardite (Cotype) BM 1978,00024 Bou Skour mine, Bou Azzer, Jbel Sarho, Morocco J.E. Dietrich, M |  | | Report (issue) | | 3. in 8 magmatic ore 9 Newfoundland 15 Germany 10. Fracture 11. Colloform pitchblende 12...62 Bote mine, Zacatecas, Mexico 26. Composite paragenetic diagram for the Zacatecas district, Mexico...Contorted banding in ore from 61 and Rammelsberg, Germany 63 63 71 74 : . INTRODUCTION The...microscope is undoubted usually of any one district magmatic ores are igneous rock or at most to closely...during crystallization. (1921) from the Akaishi mine in Japan In this ore layers of chromite alternate |  | | Journal (article/letter/editorial) | | individualvariation (Table III) extendingfrom the lower limit of about 1.325-1.330%204 to a maximumof 1...2,000 tonsand 5,000 tons,respectively.The Alamo mine (No. 10), thoughunsuccessful, did produceapproximately1...summarizedbriefly as follows(28, 25, 1). In the iVfagdalena district,heartof the area,Mississippian IKellylimestone130...eroded, rests 1,000 feet of Pennsylvanianstrata, the lower portion being shale with somequartzite,the upper...present,but mostly 56 I. S. BROWN it is of a lower temperaturetype with considerable barite and somefluorite |  | | Book | | Congress Catalog Card No. 66-17809 Printed in Germany 08 011635 3 PREFACE TO THE T H I R D (GERMAN)...N , Troy, New York, USA G. FRIEDRICH, Aachen, Germany H . FROHBERG, Toronto, Canada R. L A GANZA, North...Pullman, Washington R. A. ZIMMERMANN, Heidelberg, Germany 2 Bamdohr, Theorie Minerals XVĂ ABBREVIATIONS...expansion. Perhaps the works of the writer on Rammelsberg (1953a) or Broken Hill (1950a) alone show how...places of extreme differentiation (e.g., at the Frood Mine and at Insizwa) bismuth and tellurium minerals are |  | Gu, Lianxing, Khin Zaw, , Hu, Wenxuan, Zhang, Kaijun, Ni, Pei, He, Jinxiang, Xu, Yaotong, Lu, Jianjun, Lin, Chunming (2007) Distinctive features of Late Palaeozoic massive sulphide deposits in South China. Ore Geology Reviews, 31 (1) 107-138 doi:10.1016/j.oregeorev.2005.01.002 | Journal (article/letter/editorial) | | basins occur in different tectonic settings. The Lower Yangtze basin occurs on a passive continental margin...and recoverable Ag, Co and Mo. The ores have a lower concentration of radiogenic lead, and ÎŽ34S values...highly saline and Na-rich. Fluids and metals of the Lower Yangtze Region are interpreted to have been derived...variation of ÎŽ34S composition. Fluid inclusions have lower salinities and higher K+/Na+ ratios. Fluids are...intracontinental setting, whereas the basin along the present Lower Yangtze River was situated on a passive continental |  | | Journal (article/letter/editorial) | | ORE DEPOSITS OF THE RIO TINTO (HUELVA) DISTRICT, ALAN M. SPAIN. BATEMAN. CONTENTS. Introduction...INTRODUCTION. ThE pyritic orebodiesof the Huelva district are the oldest worked,and mostimportantcopper-sul...metasomati.c replacement. Throughthe courtesyof the mine officials,particularlythoseof the Rio Tinto, Tharsis...nearbyTharsisand La Zarza minesof 'the Huelva district lie in southwesternSpain in- the Sierra de Arcena...Western Ontario user ORE DEPOSITS OF RIO TINTO DISTRICT, SPAIN. 571 tends eighty miles across the province |  | | Book (volume) | | phisches Institut der UniversitĂ€t Heidelberg (Germany), my research training with professors like P....approach (from outcrop through to orebody and district scales, to support textural interpretation), the...center, zoned bravoite crystal. Rub.sn, Maubach, Germany (osp). b Aggregate of subtly zoned pyrite (with...and minor copper sulïŹdes (colored). Rub606, Geevor Mine, Cornwall, UK (dsp). c Dissemination of ïŹne-grained...inclusions of safflorite (white). CR328, Freiberg, Saxony, Germany (osp). d Hypidiomorphic inclusion of tetrahedrite |  | | Book | | Such metals as Cu, Ag and Zn often pass from a lower oxidation zone to a deeper cementation zone where...is harder and the test may proceed to the next lower grade. Not much force on the scratching point is...aggregates or weathered minerals have usually a lower hardness than the single or unaltered crystals of...For instance, hematite (hardness 6) will have a lower hardness in the radiating or earthy form than in...some differences. Transparency may also become lower because of mechanical effects - small rifts often |  | | Book (edition) | | subjects are enumerated. , In CHEMICAL MINERALOGY Rammelsberg Handbuch der Miner alchemic, 2d ed. In Determinative...manufactured of great per; fection at Siegen, in Germany. Pasteboard models, likewise useful aids to the...occuring planes pertain equally to both the upper and lower (or opposite) ranges of sectants, as in all ordinary...which the planes pertain to either the upper or the lower range, and not to both, and hence the planes are...and of the lower ranges are alternate, but the upper not alternate with reference to the lower, the forms |
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