Lithocaps and high-sulfidation epithermal deposits - Sociedad ...

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Low Au-Ag-Hg-As Hg Bi-Ba-As-Sb CHAQUICOCHA oxide Au-Ag-As-Sb ~100 m sulfide Zn-Pb Cu-Au-As-Ag Patchy Wormy KUPFERTAL PORPHYRY Fault contact between epithermal and porphyry alteration at Kupfertal Epithermal Porphyry Porphyry-style quartz veins with phyllic alteration 2. Cooling 2 185.3m: pyrophyllite, minor alunite 205.6m: pyrophyllite, alunite 210.6m: pyrophyllite, kaolinite 215.3m: Muscovite 1 1. Vapor condensation Breccia: from 181.5m Pyrophyllite, alunite, kaolinite Fault contact DDH KUP-3
Milagros porphyry prospect, Alto Chicama, Peru 0 500 m Patchy texture outcrop Garia, 2009 Residual quartz (silicic) and advanged argillic size matters... El Indio 8 Moz ...much of the time, cf. El Indio Arribas et al., Gold in 2000
Page 1 and 2: Lithocaps and high-sulfidation epit
Page 3 and 4: Sl Ya Wa RMt Vi To musc HS IS LS LS
Page 5 and 6: Summitville, Colorado pH ~ 4-6 2-4
Page 7 and 8: Arribas et al. (2005) Arribas et al
Page 9 and 10: Nansatsu district, S Kyushu, lookin
Page 11 and 12: Exploration and discovery histories
Page 13 and 14: http://www.iamgold.com/presentation
Page 15 and 16: Yanacocha oblique aerial to NE
Page 17 and 18: 8.2 - 9.2 Ma (Yanacocha Complex) 10
Page 19: Dome moat, laminated siliceous sedi
Page 23 and 24: NB: Mixing will not cause amorphous

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