 | | Journal (article/letter/editorial) | | ARTICLE Age and paragenesis of mineralisation at Coronation Hill uranium deposit, Northern Territory, Australia...Springer-Verlag Berlin Heidelberg 2014 Abstract Coronation Hill is a U+Au+platinum group elements deposit...to the EAR deposits. Primary mineralisation at Coronation Hill formed at 1607±26 Ma (rather than 600–900...uraninite+Ni-Co pyrite networks containing radiogenic Pb. Coronation Hill is polymetallic, and in this respect resembles...cover-hosted. A hypothesis for further testing is that Coronation Hill is also egress-style, with ores formed by |  | | Journal (article/letter/editorial) | | a l G e o l o g y TI~e Darwin Alligator Rivers region (longitude 131 °E to 134°E, Fig. 1) has a basement...Soc. of Aust. 1971, Tectonic Map of Australia and New Guinea.) Middle Proterozoic sediments. For approximately...inliers in several places, suggesting that the region was part of an Archean shield area. This would...A prominent feature in the eastern part of the region is a sequence of flat-lying Middle Proterozoic...some faults. The time-sequence of faulting in the region has not yet been properly established. IlL G e |  | Cabral, A. R., Lehmann, B., Kwitko, R., Costa, C. H. C. (2002) The Serra Pelada Au-Pd-Pt deposit, Carajas mineral province, northern Brazil: reconnaissance mineralogy and chemistry of very high grade palladian gold mineralization. Economic Geology, 97 (5) 1127-1138 doi:10.2113/gsecongeo.97.5.1127 | Journal (article/letter/editorial) | | degree of overprint by iron oxides, sericite, and kaolinite. The deep system still has gold, palladium, and...Vielreicher, 2001), and the Cu-Au deposits of the Carajás region (Tallarico et al., 2000a; Villas and Santos, 2001)...% of amorphous carbon) with large amounts of kaolinite, goethite, and manganese oxide (Tallarico et al...brecciation stage with iron oxide flooding and kaolinite formation (Tallarico, 1995). The near-surface...fragments (up to centimeters in size) of (1) white, kaolinite-rich material, (2) gray, silica-rich material |  | Mernagh, T. P., Heinrich, C. A., Leckie, J. F., Carville, D. P., Gilbert, D. J., Valenta, R. K., Wyborn, L. A. I. (1994) Chemistry of low-temperature hydrothermal gold, platinum, and palladium (+ or - uranium) mineralization at Coronation Hill, Northern Territory, Australia. Economic Geology, 89 (5) 1053-1073 doi:10.2113/gsecongeo.89.5.1053 | Journal (article/letter/editorial) | | carbonaceous-chloritic host rocks. Introduction The Coronation Hill Au-Pt-Pddepositislocatedin the upper part...1984; Ballhaus later by cyanideextraction. The Coronation Hill JointVenturewhichcurrently and Stumpfi,1986;...quartzandcarbonate veiningin diamond drill core extracted from Coronation Hill and wascarriedout as part of the ResourceAssessment...d and the 1055 MINERALIZA'rlON CHEMISTRY, CORONATION HILL, NT, AUSTRALIA 132ø 133 ø Mesozoic, Palaeozoic...Significant mine or prospect Kakadu National Park Boundary .: ß.- .. ?:':'.- .. i . CorOnation Hill |  | | Journal (article/letter/editorial) | | Witwatersrand sequence that is routinely accessible in mine workings or exploration drill holes. Texturally...(SACS, 1980), below the Parktown Shale, and the Coronation Shale are also persistent, but thinner, horizons...muscovite, 3901, Libanon G.M., Carletonville, e Coronation shale from lower Witwatersrand succession with...Booysens shale adjacent to Kimberley Reef, 3912. Crown Mine, Central Rand, e Detrital biotite in fine-grained...optically in a number of thin sections from the ERPM mine (Fig. 1), and confirmed by electron microprobe analysis |  | Cabral, A. R., Lehmann, B., Kwitko, R., Jones, R. D. (2002) Palladian gold and palladium arsenide–antimonide minerals from Gongo Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil. Applied Earth Science, 111 (1) 74-80 doi:10.1179/aes.2002.111.1.74 | Journal (article/letter/editorial) | | arsenide–antimonide minerals from Gongo Soco iron ore mine, Quadrilátero Ferrífero, Minas Gerais, Brazil Downloaded...it was not only the first major underground gold mine in Brazil but also the most famous of the so-called...agreement that the pervasive tectonic fabrics in the region east of the western edge of the Moeda Syncline...Ferrífero. Auriferous veins of Gongo Soco iron ore mine The iron orebody, predominantly of soft hematite...Minor talc and kaolinite as dispersed patches are common. In the eastern part of the mine the jacutinga |  | | Journal (article/letter/editorial) | | the world's greatest treasures. Here we see the coronation regalia, in cluding magnificent crowns, diadems...diadems, orbs, rings, and sceptres. T w o of the coronation rings consist of blue sap phires, with the Cross...lecturing to the group on the site of the Levant mine. JANUARY/FEBRUARY 1985 21 Figure 4: Leroy Vargas...gemstone collection, exclusively from the Mogok region of Burma. John was kind enough to unlock some of...College. the at Figure 5: Bournonite, Herodsfoot mine, Liskeard, Corn wall, England. Specimen is 3 by |  | Berni, Gabriel V., Heinrich, Christoph A., Wälle, Markus, Wall, Victor J. (2019) Fluid geochemistry of the Serra Pelada Au-Pd-Pt deposit, Carajás, Brazil: Exceptional metal enrichment caused by deep reaching hydrothermal oxidation. Ore Geology Reviews, 111. 102991 doi:10.1016/j.oregeorev.2019.102991 | Journal (article/letter/editorial) | | include silicification and argillic (carbon- kaolinite-, and hematite-rich) alteration zones. Fluid inclusions...little descriptive work were published when the mine was active (Jorge João et al., 1982; Meireles et...of the Carajás Mineral Province, a major mining district for world-class iron ore and IOCG deposits. The...the deposit. From stratigraphic base to top, the mine sequence at the Serra Pelada deposit comprises dolomitic...characterized by the replacement of muscovite by kaolinite with associated carbon, hematite or amesite. The |  | | Journal (article/letter/editorial) | | from a palladian gold nugget (Gongo Soco iron ore mine, Minas Gerais, Brazil) A. RAPHAEL CABRAL* AND ...auriferous vein (‘jacutinga’) of the Gongo Soco iron ore mine, Quadrilátero Ferrõ´fero, Minas Gerais, allows...inclusions of isomertieite [Pd11Sb2As2], cemented by kaolinite-hematite-palladian gold infill. The isomertieite...high-level, very oxidizing environment. In the Itabira district, Minas Gerais, Hussak (1906a) found grains of...the iron ore mines of the world-class iron ore district of central Minas Gerais, known as Quadrilátero |  | Berni, G. V., Heinrich, C. A., Lobato, L. M., Wall, V. J., Rosiere, C. A., Freitas, M. A. (2014) The Serra Pelada Au-Pd-Pt Deposit, Carajas, Brazil: Geochemistry, Mineralogy, and Zoning of Hydrothermal Alteration. Economic Geology, 109 (7) 1883-1899 doi:10.2113/econgeo.109.7.1883 | Journal (article/letter/editorial) | | The hydrothermal mineral paragenesis comprises kaolinite, quartz, sericite, amesite (Mg-rich Al-silicate)...Canadian company Colossus Minerals Inc. started a new evaluation of the deposit in 2009, allowing access...Pelada area includes geologic descriptions of the mine sequence (Jorge João et al., 1982; Meireles et al...and an upper metasandstone sequence (Fig. 2). The mine sequence at the Serra Pelada deposit (Fig. 3) overlies...(Fig. 4F). The mineralogy comprises muscovite, kaolinite, quartz, hematite, and goethite (in decreasing |  | | Journal (article/letter/editorial) | | reserves) provide only 270 t of Au (Woodall 1990). Other new deposits which have contributed or will soon contribute...Phanerozoic estimate is 1,938 t (Woodall 1990). These new deposits have given Proterozoic gold deposits a respectable...ARCHAEAN [ ~ Sedimentary Basin [ ~ Block/Inlier V * new find, reserves unconfirmed Fig. 1. Location diagram...cant examples of each ore-style; the chances of new finds being regarded as unique styles in their own...of very low pH alteration assemblages (e.g., kaolinite, pyrophyllite) which constitute argillic alteration |  | | Journal (article/letter/editorial) | | Australia). The 1200 m thick carbonate bank of the Coronation Geosyncline of northwest Canada formed about...Australia (Dunnet, 1976). The carbonate bank of the Coronation Geosyncline is succeeded by starved preflysch...and trondhjemite-tonalite gneisses in the same region. This evidence indicates massive erosion of extensive...1969), the Hurwitz Group (Bell, 1969), and the Coronation Geosyncline (with flysch deposited by turbidity...occur in the late molasse (1750 Ma old) of the Coronation Geosyncline in Canada (Hoffman, 1973). Sedimentation |  | | Journal (article/letter/editorial) | | -rutile-pyrite is found in most gold fields. Kaolinite, paragonite, biotite, pyrrhotite and arsenopyrite...(Footnote: The absence of confirmed pyrophyllite at a mine does not imply that the mineral is unstable. Although...(Footnote: The absence of confirmed cbloritoid at a mine does not imply that the mineral is unstable. In...chloritoid (not thin section) has been made at Kinross mine. ) rence of economic gold in several different...the presently-preserved structural basin. the Coronation Shale Formation and the Roodepoort Shale Formation |  | Berni, Gabriel V., Heinrich, Christoph A., Lobato, Lydia M., Wall, Vic (2016) Ore mineralogy of the Serra Pelada Au-Pd-Pt deposit, Carajás, Brazil and implications for ore-forming processes. Mineralium Deposita, 51 (6) 781-795 doi:10.1007/s00126-015-0635-7 | Journal (article/letter/editorial) | | main hydrothermal gangue minerals are quartz, kaolinite, sericite, amesite, hematite, monazite, florencite...extensive tropical weathering in the Serra Pelada region and the poor preservation of old drill cores have...1a). The mineralized zone comprises carbon-, kaolinite- and hematite-rich argillic alteration of the...associated with the carbon-rich argillic and kaolinite-rich argillic alteration zones, and the mineralogy...35 collected) of lowand high-grade carbon- and kaolinite-rich argillic ores (Table 1) were selected for |  | | Report (issue) | | investigations .................. Lower Yukon-Kuskokwim region, by W. S. West ........................ Russian...Koyukuk-Chandalar region, by A. E. Nelson ........................ Chandalar mining district.......... Gold... ................. 6 Taku Harbor-Point Astley district- ....................... 6 Hyder area........... J. Matzko....................... 13 York tin district ................ 13 Prince William Sound .......Yukon-Kuskokwim region................. data on localities examined in the Koyukuk-Chandalar region ........ |  | | Journal (issue) | | DEALER . ARTHUR CHAMBERLAIN , Editor . Member of the New York Mineralogical Club and of the Brooklyu Institute...BY THE MINERAL COLLECTOR COMPANY , 26 JOHN ST . , NEW YORK . Tilt: MINK HAL COLLECTOR. MINERALS For TEACHERS...TOPAZ CRYSTALS RENDERED OPAQUE BY INCLUSIONS OF KAOLINITE . From Thomas Mountain , Utah . Collection of...discovered that they were filled with inclusions of kaolinite crystals, while the topaz itself seemed to be...rather more interest from the fact that a probable new mineral, a silicate of iron and manganese in lustrous |  | | Journal (article/letter/editorial) | | ROCKS Since the classical study of the Orijarvi region (Eskola, 1914), the origin of cordieriteorthoamphibole...mafic rocks and subsequent metamorphism (Yalwal, New South Wales; Land's End, Cornwall) Alteration and...Shield; Baltic Shield; Newfoundland; R~dhammeren mine, Norway) Metamorphism of weathering products Residuum...granite intrusions (Orijarvi, SW Finland; Hitachi district, NE Japan; R~dhammerenmine, Norway) Ca depletion...mafic hornfelses; Mg source unknown (Tommy Burns mine, Queensland) Reaction zones between ultramafic and |  | | Journal (article/letter/editorial) | | (randomly interstratified mica-montmorillonite), kaolinite and quartz. Fourier transforms of the basal series...Allan, 1943. 2 Soil series Maleb Location Coronation, Alta. Cooking Lake Edmonton, Alta. Three Hills...absorption analysis The absorption spectra in the region 250--700 cm -1 were obtained with a Beckman IR7...a NaCl-prism was employed for recording in the region 700-4000 cm -1. Samples were prepared as a potassium...interstratified mica-montmorillonite and the 7 A phase is kaolinite. A rapid method for quantitative estimation of |  | | Journal (article/letter/editorial) | | calc-silicate footwall at Sandsloot mine, Potgietersrus district, South Africa P. E. B. Armitage University...present study is based on fieldwork at the Sandsloot mine, an open-pit operated by Anglo Platinum, where siliceous...strike.2 Data from drill cores and mapping within the mine have shown the reef to consist essentially of two...Paul Armitage to carry out fieldwork at Sandsloot mine and the assistance of the staff of the geology department...department and assay laboratory at the mine is gratefully acknowledged. References 1. Buchanan D. L. |  | | Report (issue) | | ... 171 D.R. Boyle The Green Mountain uranium district, Central Wyoming: type locality of solution front...sandstone and the Aphebian basement of the Key Lake mine and other uranium deposits in the eastern Athabasca...basement in comparison with the Athabasca Basin region .................................................publish these contributions. North America, the region dealt with in this meeting, is of eminent significance...exploration expenditures were expended in this region, while this percentage dropped to 33% in 1986. |  | | Report (issue) | | volcano-sedimentary depositional system, providing new U-Pb zircon geochronologic data, and concluding that...Stuhini Group rocks in the past-producing Scottie gold mine area near Stewart and a Hazelton Group stratigraphy...mercury as an exploration tool with new surveys at the Lara-Coronation polymetallic volcanogenic massive...LA-ICP-MS zircon geochronology of the Scottie gold mine area, northwestern British Columbia ..............province). The Cordilleran Geoscience Section generates new knowledge through fieldand desk-based research activities |  | | Report (issue) | | Nicola Group (Triassic). The second paper examines new U-Pb ages for intrusive rocks of the Granite Mountain...central British Columbia. Greig et al. contribute new U-Pb and Re-Os geochronology and explain the geological...Creek stock, and Sheridan Creek stock, Gibraltar Mine area, south-central British Columbia .............Saddle South epithermal Au-Ag vein system, Iskut district, northwestern British Columbia .................British Columbia Geological Survey projects in 2020. new knowledge through field- and desk-based research |  | | Book | | States by DK Publishing 345 Hudson Street, New York, New York 10014 Copyright © 2016 Dorling Kindersley...Publishing Special Markets, 345 Hudson Street, New York, New York 10014 or SpecialSales@dk.com. Printed and...noted that this map is by no means exhaustive, and new discoveries are ongoing. Diamond Opal Precious...the Superpit is Australia’s largest open pit gold mine and is one of the largest open pit mines in the...Zircon Jasper Rock crystal Indonesia Diamond New Zealand Nephrite 026 INTRODUCTION Grading and evaluation |  | | Journal (article/letter/editorial) | | CarajaÂs, a leading mining area in Brazil. This region is characterised by a complex geological and structural...Formation) which is host to other gold deposits in the region (Igarape Bahia, AÂguas Claras). The Rio Fresco/AÂguas...total transformation into friable aggregates of kaolinite, Fe oxide-hydroxides, silica and secondary phosphatesulphates...imprint. The geological evolution of the CarajaÂs region and the characteristics of mineralisation at Serra...Au and PGE. Introduction The Serra dos CarajaÂs region (Para State, Brazil) is one of the most important |  | Chesley, J.T., Halliday, A.N., Snee, L.W., Mezger, K., Shepherd, T.J., Scrivener, R.C. (1993) Thermochronology of the Cornubian batholith in southwest England: Implications for pluton emplacement and protracted hydrothermal mineralization. Geochimica et Cosmochimica Acta, 57 (8) 1817-1835 doi:10.1016/0016-7037(93)90115-d | Journal (article/letter/editorial) | | Gunnisfake Mine :e-Mine Wheat Remfry i L Wheat Jane Mine \ South Crafty Mine / ‘Hemerdon W-Mine \ G&&arrow...for the St&e 3 mineralization in the SoutbCrofiy mine and postdate the host Cammenellis pluton by 30-40...they were no longer capable of driving 200-4OO”C mine~izing fluids. The closure temperature for d&rent...incfusion filling temperatures at the Panasqueira mine. Using regressions of both laboratory and geologic...‘47Sm/‘UNd FIG. 4. Sm-Nd isochron diagram for the Geevor Mine D-lode. The fluorites are plotted as 2a mean error |
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