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NEWMONT <br /> GOLDCORP <br /> in Section 3 below'. Details of the horizontal and vertical extents of mining are available in <br /> previous amendments. The horizontal and vertical extents of the Schist Island Mine area, <br /> including backfill sequencing as part of the VLF2 Phase 3 construction, are shown in Appendix 1. <br /> Details of the reclamation plan are provided in Exhibit E. <br /> 2.2 Geology <br /> The geology of the area affected by Amendment 13 has been described in previous submittals. <br /> A summary of the geology in the North Cresson Mine area and Squaw Gulch is provided below. <br /> Exhibit C-7 shows the geology of the District. <br /> Mineralization in the northwest portion of the District falls into the North Cresson Mine area and <br /> includes Globe Hill, Schist Island, and the SGOSA. The geology is dominated by a large, <br /> northwest-trending, elongate, Precambrian ridge of schist that is surrounded by diatremal breccia. <br /> Both the schist and breccia are oxidized on the surface and display moderate to strong potassic <br /> alteration and weak argillic alteration. This area has been intruded by scattered and discontinuous <br /> lamprophyre and phonolitic dikes as well as a small plug of porphyritic phonolite. The dominant <br /> structural trends in this area display a north-northwest and northeast-trending fabric. <br /> The Globe Hill area is underlain by breccia and phonolitic country rock that was intruded by late- <br /> stage hydrothermal breccia pipes. These breccia pipes hosted most of the gold mineralization in <br /> the area and are characterized by strong argillic alteration as well as the presence of sulfate <br /> (gypsum and anhydrite), carbonate (calcite and rhodochrosite), and quartz veining. The breccia <br /> pipe bodies are generally less than 500 feet in diameter and occur at the intersection of northeast- <br /> and north-northwest-trending structural zones. <br /> The Squaw Gulch area general lithology is composed of four rock types. The predominant <br /> bedrock unit is the Cripple Creek lapilli breccia, which generally consists of a massive, <br /> structureless, matrix-supported breccia that is poorly sorted, typical of diatremal crater fill breccia. <br /> Clasts are sub-angular to sub-rounded and primarily composed of various phonolite units with <br /> occasional Precambrian fragments. The breccia commonly shows varying degrees of <br /> hydrothermal alteration. The second and third rock types are the plagioclase phonolite and the <br /> ' Mining activities and sequencing will not change from previous amendments, except for the sequence of backfilling <br /> the Schist Island Pit area with the construction of VLF2 Phase 3 Details of the VLF2 Phase 3 sequencing are <br /> provided in the Valley Leach Facility 2 Phase 3 Detailed Design Report provided in Appendix 1 <br /> Cripple Creek&Victor Gold Mining Company Exhibit D <br /> Cresson Project Amendment 13 <br /> 4 <br />