Lithocap Structure-controlled feeder zone Lithology-controlled ...

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Decrease: Alunite Pb, Ag/Au Whole-rock (alunite-bearing only): Pb, Ag, Ag/Au, Hg Lepanto FSE porphyry Lepanto Victoria veins 500 m FSE Surface projections of Victoria-Teresa IS vein & Lepanto HS enargite, over Far Southeast porphyry Alunite 1.40-1.45 Ma Enargite-Au IS Au-Ag veins Teresa veins Bt 2.2-1.8 Ma Porphyry Cu Hydro Biot 1.40-1.45 Ma Illite ~1.35 Ma X Horn 1.45 Ma X Biot 1.18 Ma X Illite 1.4-1.15 Ma Hedenquist et al., 2001
Weak smectite + pyrite, illite-smectite + pyrite at lower elevation DNK: dickite, nacrite, kaolinite, or any combinations iX: illite crystallinity DNK: dickite, nacrite, kaolinite, or any combinations Upward flare of leaching due to cooling; hydraulic gradient caused offset of lithocap (and ore) from causative intrusion Hedenquist et al., 1998; Hedenquist and Taran, 2011
Page 1 and 2: Zhaoshan Chang, Noel White, Jeffrey
Page 3 and 4: 50 ppb Au X Small workings Breccias
Page 5 and 6: 1.41 Ma 1.35 Ma 1.42 Ma FSE - Lepan
Page 7: - Related to Na content Chang et al
Page 11 and 12: Geologic setting of intermediate- (
Page 13 and 14: OR, perched, barren lithocap, margi
Page 15 and 16: 15.4-14.5 Ma 14.5-14.4 Ma Colquijir
Page 17 and 18: Dante Loayza and Jorge Barreda (Aru

Lithocap Structure-controlled feeder zone Lithology-controlled ...

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