 | 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) | | Geochemistry of the Wainaulo Cu-Au Porphyry Deposit, Namosi District, Fiji* Evan A. Orovan,1,2,† David... calc-alkalic, Wainaulo Cu-Au porphyry deposit of the Namosi district, Fiji, hosts distinct styles of...substantial porphyry Cu-Au resource. The early stages produced medium-grade Cu, low-grade Au and concentric...diorite intrusions. Discrete zones of high-grade Cu and Au and calc-sodic alteration were then superimposed...quartz-sulfide and epidote-sulfide veins. As the magmatic-hydrothermal system waned, lower Cu and Au grades |  | | 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...depositsin Fiji includevarioustypesof massivesulfide;manganeseores; disseminated porphyry-type Cu-Au deposits;...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 |  | | Book | | volcanic-sedimentary massive sulphide deposits. Sulphide deposit A is assumed to overlie source area of base metal...combinations of elements: Ca-Mg, Na-K, Fe-Mn, Pb-Zn, Cu-Zn, Ni-Co. A generalized schematic illustration of...source (deposit A, Fig. 5) which may flow from the source area to a nearby depression (deposit B, Fig...single element haloes, are much more restricted in deposit B-type situations; however, multielement haloes... Flin Flon, Manitoba. Vertical sulphide zone (Zn-Cu) at a depth of 100 ft (30 m); overburden 25 ft (7 |
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