United States

Gold Road Mine

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Overview

Mine TypeUnderground
Commodities
  • Gold
Mining Method
  • Shrinkage stoping
  • Alimak
Production Start... Lock
Mine Life... Lock
ShapshotGold Road declared commercial production in December 2020. On November 3rd, 2021, Aura Minerals Inc. announced the decision to stop investing in Gold Road and placed the mine in care and maintenance.

On July 27, 2022, Aura Minerals Inc., completed the sale the Gold Road mine located in Arizona to PPG Arizona Holdings Acquisition, LP.

According to MSHA, Gold Road has status of NonProdActive Mine.

Owners

SourceSource
CompanyInterestOwnership
Pandion Mine Finance, LP 100 % Indirect
On July 27, 2022, Aura Minerals Inc. (Company) announced, that the Company, through its wholly owned subsidiary, completed the sale of all the issued and outstanding shares of its indirect wholly owned subsidiary Z79 Resources, Inc. (“Z79”) which owns through Gold Road Mining Corp. (“GRMC”) the Gold Road mine located in Arizona to PPG Arizona Holdings Acquisition, LP (“PPG”), an affiliate of Pandion Mine Finance, LP.

Contractors

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Deposit type

  • Epithermal
  • Vein / narrow vein

Summary:

The mineralization at the Gold Road Mine consists of quartz-calcite-adularia veins within the northwesttrending Gold Road fault zone. The fault zone can be over 150 ft (46 m) wide and quartz vein(s) may occupy one or more strands within the structure. Vein strands usually occupy the footwall, hanging wall or a central portion of the structure, but strands may occur in two or all three of these positions within the same area. Where the fault zone is narrow (such as areas within the Gold Road latite) vein material may occupy the entire structure.

The “main” Gold Road vein occupies a strong fault fissure, typical of the district. This structure was formed by several separate movements before, during and after gold mineralization. The strike of the sinuous vein varies from N50°W to N66°W and generally dips 65° to 85° to the northeast, though locally the vein can be vertical or dip steeply to the southwest. The vein system crops out continuously for about 7,500 ft (2,286 m) on the Property, including a segment that is in ore grade mineralization on the surface for over a mile (1,524 m). Most of the ore has been mined in wide lenses within dilatant zones of the vein structure. The wider dilatant zones of the vein may be related to areas of north- to northeast-curving concavity along the sinuous normal fault.

The character of the Gold Road vein varies considerably along its vertical extent. In the lowest stratigraphic exposures, the vein consists of fine-grained chalcedonic and banded quartz in a braided or complex stockwork vein system up to 30 ft (9 m) wide hosted in Oatman latite. At stratigraphically higher exposures where the vein is hosted in Gold Road latite, the vein is a tabular, fissure-like body typically 3-7 ft (0.9-2.1 m) wide. Historically, high-grade ore has only been mined from the Gold Road vein within Oatman latite and Gold Road latite. At the highest exposed levels, the Gold Road vein cuts lithologies of the Upper Volcanics series (Sitgreaves Tuff and Antelope quartz latite). This upper zone generally coincides with the Red Top prospect area. Mineralization at Red Top consists of very fine grained chalcedonic quartz and siliceous sinter deposits reflective of the uppermost levels of a low-sulfidation epithermal system, near the paleosurface or paleo-water table. Quartz mineralization at Red Top is several inches to a foot (0.3 m) wide and does not contain significant gold mineralization. Although the character of Gold Road vein varies depending on host rock, the changes in the vein at formation contacts are not sharp and abrupt. There is a gradual narrowing of the vein system upward.

The mineralogy of the Gold Road vein is typical of the district. The deposit is interpreted to be a lowsulfidation, epithermal vein deposit. The vein consists mostly of quartz with local concentrations of calcite and adularia. At least five major stages of quartz deposition are present in the vein. The last two stages of quartz, which consist of pale green to deep honey yellow, fine- grained chalcedonic silica and breccia, appear to have accompanied most of the ore grade gold in the vein.

Gold is the most valuable constituent of the ore at the Gold Road Mine. Silver occurs with the gold in a ratio of approximately one part gold to one part silver on average. Sulfides are rare in the ore, but do occur in higher grade shoots. Fluorite is locally present. High-grade ore frequently contains very fine-grained free gold, copper sulfides or carbonates and, rarely, cerargyrite (AgCl) in thin quartz bands. Most gold is microscopic.

Reserves

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Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

CommodityProductUnits20212020Avg. Annual (Projected)
Gold Equivalent Metal in doré oz  ....  Subscribe  ....  Subscribe
Gold Payable metal oz 203,569

Production Costs

CommodityUnits2021
Cash costs Gold Equivalent USD  ....  Subscribe

Financials

Units20212020
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Revenue M USD  ....  Subscribe  ....  Subscribe
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Heavy Mobile Equipment

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Personnel

Mine Management

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 16, 2024
....................... Subscription required ....................... Subscription required Subscription required Jan 16, 2024

EmployeesYear
...... Subscription required 2021
...... Subscription required 2020

Aerial view:

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