Selection of rocks outcropping at Obichnik. A. Ledge of sub-vertical surface oxidized quartz-sericite-pyrite (QSP) alteration. B. QSP structurally controlled replacement body with oxidized, steep, sheeted, quartz-pyrite veinlets. C. QSP altered volcanic fragmental. D. Siliceous hydrothermal breccia developed within volcanic fragmental.
Selection of rocks outcropping at Obichnik. A. Ledge of sub-vertical surface oxidized quartz-sericite-pyrite (QSP) alteration. B. QSP structurally controlled replacement body with oxidized, steep, sheeted, quartz-pyrite veinlets. C. QSP altered volcanic fragmental. D. Siliceous hydrothermal breccia developed within volcanic fragmental.