 | | Journal (article/letter/editorial) | | 6 The MineralDepositsand Metallogenesis of the Fiji Platform HOWARD COLLEY * Instituut voor Aardwetenschappen... The Fiji platform has a thick, youthful crust of ensimaticorigin. Stratigraphy within the Fiji islandsindicatesa...late Miocene tectonic event. Mineral depositsin Fiji includevarioustypesof massivesulfide;manganeseores;...Plioceneage. Nearly all the major mineraldepositsin Fiji are associated with theserocks. Volcanic and structuralfactors...orogenyand deepfracturing of the Fiji platform--factorsof fundamentalimportanceto Fiji mineralization;however,a |  | Orovan, Evan A., Cooke, David R., Harris, Anthony C., Ackerman, Ben, Lawlis, Erin (2018) Geology and Isotope Geochemistry of the Wainaulo Cu-Au Porphyry Deposit, Namosi District, Fiji. Economic Geology, 113 (1) 133-161 doi:10.5382/econgeo.2018.4546 | Journal (article/letter/editorial) | | Wainaulo Cu-Au Porphyry Deposit, Namosi District, Fiji* Evan A. Orovan,1,2,† David R. Cooke,1,2 Anthony...Wainaulo Cu-Au porphyry deposit of the Namosi district, Fiji, hosts distinct styles of alteration and mineralization...intrusion of the main-stage quartz diorites and the formation of quartz-sulfide and epidote-sulfide veins...produced coincident with emplacement of subsequent quartz diorite intrusions. Late-stage anhydrite-pyrite...and chlorite-illite alteration overprinted the quartz diorite intrusive complex. The final hydrothermal |  | | Journal (article/letter/editorial) | | Characteristics of the Tuvatu Gold-Silver Telluride Deposit, Fiji: Comparisons with the Emperor Deposit NANCY L. SCHERBARTH*...of 13 t Au is the second largest gold deposit in Fiji after the large Emperor gold telluride deposit (production...occur along the >250-km east-northeast–trending Viti Levu lineament. They are spatially associated with alkaline...stages and is characterized by the presence of quartz-roscoelite telluride veins in which gold-rich tellurides...groups) spatially related to the Viti Levu lineament in northern Viti Levu. Introduction THE TUVATU ore system |  | | Report (volume) | | Zealand ----------------------------------------------Fiji -------------------------------------------------------Conclusions...---------- _ Oceania --------------Australia ----------Fiji --------------- 1,001} 767 Reserves (millions...which barite and associated minerals (commonly quartz, calcite, fluorite, and sulfides of base metals)...export (Zans, 1951). BRITISH HONDURAS A zone of quartz-barite veins 60 feet wide, dipping 70°, is exposed...along with about 20 percent magnetite and some quartz. Mechanical concentration of the barite proved |  | | Report (issue) | | Fluid-inclusion and geochemical studies at the Emperor gold mine, Fiji; Unpub. Ph.D. dissertation, University of Tasmania...Tinto Minera S.A., 72 p. Ashley, R. P., 1974, Goldfield mining district, jLn Guidebook to the geology...Relation between volcanism and ore deposition at Goldfield, Nevada, in Proceedings of the Fifth Quadrennial...gold and other metals in silicified rocks of the Goldfield mining district, Nevada: U.S. Geological Survey...L., 1976, Direct dating of mineralization at Goldfield, Nevada, by potassium-argon and fission-track |  | | Report (issue) | | 1986, Geology and development of the Hishikari mine: Mining Geology, v. 36 (2), no. 196, p. 117. Adams...Fluid-inclusion and geochemical studies at the Emperor gold mine, Fiji: Unpub. Ph.D. dissertation, University of Tasmania...Peru Bull., v. 46, p. 9-24. Ashley, R. P., 1974, Goldfield mining district, in Guidebook to the geology of...Relation between volcanism and ore deposition at Goldfield, Nevada, in Proceedings of the Fifth Quadrennial...gold and other metals in silicified rocks of the Goldfield mining district, Nevada: U.S. Geological Survey |  | Chapman, R. J., Leake, R. C., Bond, D. P. G., Stedra, V., Fairgrieve, B. (2009) Chemical and Mineralogical Signatures of Gold Formed in Oxidizing Chloride Hydrothermal Systems and their Significance within Populations of Placer Gold Grains Collected during Reconnaissance. Economic Geology, 104 (4) 563-585 doi:10.2113/gsecongeo.104.4.563 | Journal (article/letter/editorial) | | = Hope Cove, 11 = Wadham Rocks, 12 = Loddiswell mine. Localities in the Lammermuir Hills (adapted from...by several generations of quartz and carbonate veins Gold in a vertical quartz-calcite vein, hosted by...sulfides and sulfosalts Auriferous arsenopyrite in quartz veins i. Alloys: Au, (Au+Ag), (Au+Pd); inclusions:...modification to Au-Pd alloys from the Cauê iron mine, Itabira district, Brazil, was investigated by Olivo...(1989) and Jaireth (1992) both used feldspar-mica-quartz assemblages to buffer pH during empirical experimentation |  | | Report (volume) | | Paths of Hydrothermal Fluids and the Origin of Quartz-Alunite-Gold Deposits By George V. Albino........investigation of a core hole documented fractured and quartz serialized tuff containing molybdenite, as well...graduated at 250-Ma intervals. are recognized. Quartz is found throughout Tshirege, but it is rare in...Bandelier Tuff. Tertiary dacites, rhyodacites, and quartz latites from most of the Tschicoma Formation (Polvadera...Petrology of the zoned calcalkaline magma chamber of Mount Mazama, Crater Lake, Pb ISOTOPE COMPOSITIONS, |  | | Report (issue) | | . • • • • India • • • • •• Australia ... • • •• Fiji .. • • • • New Zealand • • • • I •• • • • •...req11ire fine-grinding, but this is seldom done at the mine . .British mines working barytes practise mineral...Nevada, little of the mineral needs treatment at the mine, the bulk being taken direct to the crushing and...the barytes, which has been concentrated at the mine by hand-picking and washing processes, to ordinary... In Great Britain, the Settlingstones witherite mine, near~ Hexham, Northumberland, has one of the most |  | | Book (edition) | | Appendices: I Western World Gold Supply II World Gold Mine Production III Western World Gold Supply and Demand...history, the private buying of gold had exceeded mine supply, forcing central banks to sell into the market...to sign a contract with the city of Palo Alto to ‘mine’ its sewage to recover gold from the effluent of...centuries, where jewellery demand alone outstrips mine supply and central banks are helping fill the gap...1744 with the discovery of a quartz outcrop near Ekaterinburg. The new mine was soon being run by the Czar |
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