Deposit Types
The Gold Rock Property is a Carlin-type gold deposit (CTGD) and features sediment-hosted, disseminated gold deposited within Mississippian limestone and siltstone units, namely the Joana Limestone and, to a lesser extent, the overlying Chainman Shale and underlying Pilot Shale. CTGDs in northern Nevada are divided into a series of trends. The Gold Rock Property lies on the south eastern end of the Battle Mountain-Eureka Trend. Several authors propose that the trends for CTGDs in northern Nevada reflect structural lineaments in the basement (e.g. Cline et al., 2005; Muntean et al., 2011). The Battle Mountain Eureka trend corresponds to a boundary between two portions of crust which have different Gravity and Magnetic signatures (Grauch et al., 1995, 1998; Tosdal, 1999).

Carlin-type gold deposits in northern Nevada represent the second highest concentration of Au in the world and around 6% of global annual Au production (Muntean et al. 2011).

Geometry of Mineralization
The primary feeder structure at Gold Rock is postulated to be a steeply dipping reverse fault reactivated with extensional dip-slip, known as the EZ Junior Fault (Carden, 1988). The EZ Junior Fault is adjacent to and sub-parallel with the western limb of the EZ Junior Anticline in the area of the EZ Junior open pit. When these fluids intercepted rock with the favorable geochemistry and porosity (Joana Limestone and Chainman Shale), the fluids reacted with the rocks ........

The Gold Rock Project is composed of a single project with three mining areas: the previously developed North Pit area in the Northern portion of the project; the Center Pit area in the central portion of the project south of the North pit; and the South Pit area located south of the Center pit area.

Standard mining technology has been utilized to create an open pit for each of the three mining areas.

Most of the production as currently designed comes from the North Pit. Given the rapidly increasing strip ratio with increasing depth due to the configuration of the mineralized zone, it is unlikely that mining at significantly greater depth than planned in this PEA will prove to be economic unless the configuration of the mineralized body changes with further drilling and/or grade or gold price significantly increases. The North Pit has approximate dimensions of 5,120 feet (1,560 m) south to north by 1,590 feet (485 m) east to west and a maximum depth of 620 feet below current ground level. The North Pit is composed of four mining phases with the first phase being a standalone starter pit

The Center Pit based on the current geologic model, in its current configuration carries a particularly high strip ratio, which may benefit from additional drilling. The Center Pit has approximate dimensions of 1,950 feet south to north by 1,490 feet east to west and a maximum depth of 690 feet (190 m) below current ground level. The Center Pit is composed of ........

- subscription is required.

- subscription is required.