A ProvÃncia AurÃfera TapajÃ³s-Xingu: AvanÃ§os no ... - ADIMB

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Palito Alkali-calcic g ran ite(a d o m ic in tru sio n ? )Au -Cu m ain vein sF o fo q u in h a g ran o d io ritean d q u artz d io riteM afic d ikesSeco n d ary Au -Cu m ain vein san d sto ckw o rksRio No vo g ran iteM ag n etite g ran itePo rp h yry d ikes- Mafic dikes appear to be coeval with Au-Cu mineralization- Some porphyry dikes post-date gold and copper mineralization- Brittle faults cut orebodies
Hydrothermal alteration in the Palito granite and granites,porphyry (stocks and dikes) associated to epithermalmineralizationa) Na-metasomatism (more abundat in Batalha Granite, local inepizonal porphyries and gra<strong>no</strong>phyries)Albite + quartz + fluoriteb) K-metasomatismMicrocline + biotite + quartzc) Propylitic alterationEpidote + cli<strong>no</strong>zoisite + chlorite + albite + carbonates + quartz + sericite +sulfides + leucoxene + biotite + fluorite + apatite + titanited) Sericitic alterationQuartz + amethyst + sericite + pyrite + chalcopyrite + molybdenite galena +fluorite + pyrophyllite + clay minerals + gold + prehnite pumpellyite + zeolites
Page 1 and 2: A Província Aurífera Tapajós-Xin
Page 4 and 5: THE UATUMÃ MAGMATISMIncludes calc-
Page 6: 1.9 - 1.86 MAGMATIC-HYDROTHERMAL MI
Page 9: Schematic stratigraphy of the Tapaj
Page 12 and 13: Au high-sulfidationmineralizationCu
Page 14 and 15: Schematic cross-section of the high
Page 16 and 17: AluniteJuliani et al. (2005)Paleopr
Page 18 and 19: Pyrite sulfur isotopeTapajós HS: -
Page 20 and 21: The low-sulfidation (adularia-seric
Page 22 and 23: Stratigraphy of volcanicrocks and p
Page 24 and 25: Rhyolites strongly affected by adul
Page 26 and 27: Quartz and sulfide veins in strongl
Page 30: Xingu areaLagler (2011)Juliani & Fe
Page 33 and 34: Ash tuffSpherulitesMarine calciaren
Page 36 and 37: Tapajós - XinguPearce et al. (1984
Page 40 and 41: The Palito Granite1.89 Ga Au-(Cu) p
Page 42 and 43: GEOCHEMISTRYHarris et al. (1986) Sc
Page 50 and 51: CpyGa + SpCpyGa + Sp + Cpy
Page 53 and 54: Mineral Chemical formula Mineral Ch
Page 55 and 56: Hydrogen Isotopic compositionMinera
Page 57: FLUID INCLUSION STUDYUsero et al. (
Page 65 and 66: Fig. 2.5 Reconstruction of cratons
Page 67: Carneiro et al. - See the poster ex
Page 73: Volcanic coverANP
Page 84: LS + Por(Cu+Mo+(Au)HS (Au)??Por (Au
Page 89: AcknowlegmentsWe are greatly indebt

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A ProvÃncia AurÃfera TapajÃ³s-Xingu: AvanÃ§os no ... - ADIMB