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United States
Gold Rock Project

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 Location:
48 km SE from Eureka, Nevada, United States

  Project Contacts:
8310 S Valley Highway, STE 180
Englewood
Colorado, United States
80112
Phone  ...  Subscription required
Fax+1.303.357.2499
EmailEmail
WebsiteWeb
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  • Overview
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Overview

StagePreliminary Economic Assessment
Mine TypeOpen Pit
Commodities
  • Gold
Mining Method
  • Truck & Shovel / Loader
Mine Life6.5 years (as of Jan 1, 2020)


Owners

Source:
CompanyInterestOwnership
Calibre Mining Corp. 100 % Indirect
GRP Gold Rock, LLC is a wholly owned subsidiary of Fiore and owner of the Gold Rock project.
Jan. 12, 2022 - Calibre Mining Corp. (TSX: CXB; OTCQX: CXBMF) (“Calibre” or the “Company”) and Fiore Gold Ltd. (“Fiore”) (TSXV: F; OTCQB: FIOGF) are pleased to announce the successful completion of the previously announced transaction pursuant to which, among other things, Calibre acquired all of the issued and outstanding common shares of Fiore (the “Fiore Shares”) pursuant to a court-approved plan of arrangement (the “Arrangement”).
As a result of the Arrangement, Calibre acquired a 100% interest in Fiore’s Golden Eagle project in Washington State.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Carlin-type
  • Sediment-hosted


Summary:

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 ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

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 ........


Crushing and Grinding
Source: Subscription required

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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Projected Production:

CommodityUnitsLOM
Gold oz 362,751
All production numbers are expressed as metal in doré.

Operational Metrics:

Metrics
Stripping / waste ratio  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
Daily processing rate  ......  Subscription required
Tonnes processed, LOM  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

Reserves at April 30, 2020:
Au Cut-off 0.09g/t.

CategoryTonnage CommodityGradeContained Metal
Indicated 18.996 Mt Gold 0.66 g/t 403 koz
Inferred 3.027 Mt Gold 0.87 g/t 84.3 koz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold USD  ......  Subscription required&nbs
All-in sustaining costs (AISC) Gold USD  ......  Subscription required&nbs
Assumed price Gold USD  ......  Subscription required&nbs
* According to 2020 study / presentation.
Subscription required - Subscription is required.

Operating Costs:

Units2020
OP mining costs ($/ton milled) USD 10.4 *
Processing costs ($/ton milled) USD  ......  Subscription required
G&A ($/ton milled) USD  ......  Subscription required
Total operating costs ($/ton milled) USD  ......  Subscription required
* According to 2020 study.
Subscription required - Subscription is required.

2020 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Pre-Production capital costs $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 87.1
G&A costs $M USD 10
Total Taxes $M USD  ......  Subscription required
Royalty payments $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Operating margin (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
After-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 5% $M USD  ......  Subscription required
After-tax NPV @ 5% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
After-tax IRR, %  ......  Subscription required
After-tax payback period, years  ......  Subscription required
Subscription required - Subscription is required.


Proposed Heavy Mobile Equipment as of April 30, 2020:
HME TypeModelSizeQuantityLeased or
Contractor
Drill (blasthole) 6.25 inch ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Leased
Subscription required - Subscription is required.

Mine Management:

Job TitleNamePhoneEmailProfileRef. Date
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
....................... Subscription required ....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
....................... Subscription required ....................... Subscription required Subscription required Apr 30, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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