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United States
Bell Mountain Project

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 Location:
86 km SE from Fallon, Nevada, United States

  Project Contacts:
Suite # 650 - 1021 West Hastings Street
Vancouver
British Columbia, Canada
V6E 0C3
Phone  ...  Subscription required
Fax(604) 558-7695
WebsiteWeb
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Overview

StagePermitting
Mine TypeOpen Pit
Commodities
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Heap leach
  • Carbon adsorption
  • Merrill–Crowe
  • Cyanide (reagent)
Mine Life4 years (as of Jan 1, 2017)
Latest NewsEros Resources Corp. Closes Private Placement     August 13, 2020


Owners

 
CompanyInterestOwnership
Eros Resources Corp. 100 % Direct

Deposit Type

  • Breccia pipe / Stockwork


Summary:

The Bell Mountain property is located within the Fairview Peak caldera, a small Miocene (~19.2 Ma) volcanic center comprised of a thick sequence of rhyolite-dacite flows, flow domes, and pyroclastic rocks. Epithermal low-sulfidation gold-silver mineralization is hosted by calcite and quartz-calcite veins and stockwork associated with pervasive silicification. Veins and hydrothermal alteration are controlled by east northeast trending near-vertical structures and west-northwest cross structures. The precious metal-bearing minerals are electrum, argentite/acanthite, and native silver. To date, four main bodies of gold-silver mineralization (Varga, Spurr, Sphinx and East Ridge) have been defined by drilling. The larger Spurr and Varga zones are situated along the principal NE structural trend (Varga-Spurr fault), the Sphinx zone is controlled by a WNW cross structure (Sphinx fault). The East Ridge zone is controlled by a NE striking structure. The East Ridge Deposit consists of a single east-northeast trending quartz-calcite vein which dips steeply to the south.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mining operation is assumed to be a conventional open pit mine, with drill and blast rock breakage and truck and loader materials handling.

The mine production schedule was based on an average of 5,000 tons / day delivered to the crusher and then placed on the heap leach pad as crushed mineralized material. The pits will be mined sequentially beginning at the Spurr pit near the crusher and progressing easterly to the Varga, Sphinx and East Ridge pits. The production schedule was constrained to produce a constant feed of mineralized material to the crusher and conveyor (or truck) loading onto the heap leach pad. Some stockpiling of higher grade material may be required to balance the crusher feed rate.


Crushing and Grinding


Processing

  • Heap leach
  • Carbon adsorption
  • Merrill–Crowe
  • Cyanide (reagent)

Source: Subscription required

Summary:

Based on proximity to surface, average grade and the results from preliminary metallurgical test work the recovery methods anticipated to be most appropriate for the Bell Mountain deposits (Spurr, Varga, Sphinx and East Ridge) would be valley leach, in which multiple lifts of mineralized material are placed on a permanent pad. While the mineralized material has a relatively large silver content (25:1 Ag:Au ratio in some materials), a Merrill-Crowe recovery system might be considered. However, given the much higher Au recoveries (~80%) and the very low Ag recoveries (<15%) carbon adsorption of the precious metals from the leach solution would be suggested for this operation. Heap leaching with carbon adsorption is suggested as the best processing option for all of the mineralized material at Bell Mountain.

Blasted rock is fed to a jaw crusher which will reduce the maximum particle size to 4 inches. Following primary crushing, the mineralized material will be fed to a standar ........


Projected Production:

CommodityUnitsLOM
Gold oz 60,056
Silver oz  ......  Subscription required

Operational Metrics:

Metrics
Daily mining rate  ......  Subscription required
Waste tonnes, LOM  ......  Subscription required
Ore tonnes mined, LOM  ......  Subscription required
Total tonnes mined, LOM  ......  Subscription required
* According to 2017 study.

Reserves at December 31, 2017:

CategoryTonnage CommodityGradeContained Metal
Measured 1,103 k tons Gold 0.019 oz/ton 21,087 oz
Measured 1,103 k tons Silver 0.52 oz/ton 573,256 oz
Measured 1,103 k tons Gold Equivalent 0.021 oz/ton 22,987 oz
Indicated 1,826 k tons Gold 0.017 oz/ton 31,340 oz
Indicated 1,826 k tons Silver 0.44 oz/ton 798,074 oz
Indicated 1,826 k tons Gold Equivalent 0.019 oz/ton 33,805 oz
Measured & Indicated 2,929 k tons Gold 0.018 oz/ton 52,427 oz
Measured & Indicated 2,929 k tons Silver 0.47 oz/ton 1,371,330 oz
Measured & Indicated 2,929 k tons Gold Equivalent 0.019 oz/ton 56,793 oz
Inferred 1,978 k tons Gold 0.014 oz/ton 28,332 oz
Inferred 1,978 k tons Silver 0.43 oz/ton 844,804 oz
Inferred 1,978 k tons Gold Equivalent 0.015 oz/ton 30,271 oz

Commodity Production Costs:

CommodityUnitsAverage
Cash costs Gold USD 758.86 / oz *
Assumed price Silver USD 17.5 / oz *
Assumed price Gold USD 1,300 / oz *
* According to 2017 study / presentation.

Operating Costs:

Units2017
OP mining costs ($/ton mined) USD 2.3 *
Processing costs ($/ton milled) USD  ......  Subscription required
Total operating costs ($/ton milled) USD  ......  Subscription required
* According to 2017 study.
Subscription required - Subscription is required.

2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Total CapEx $M USD  ......  Subscription required
OP OpEx $M USD  ......  Subscription required
Processing OpEx $M USD 20.4
Total OpEx $M USD  ......  Subscription required
Net revenue (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
Pre-tax payback period, years  ......  Subscription required
After-tax payback period, years  ......  Subscription required
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Heavy Mobile Equipment:

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Corporate Filings & Presentations:

DocumentYear
Preliminary Economic Assessment 2017
Subscription required - Subscription is required.

News:

NewsDate
Eros Resources Corp. Closes Private Placement August 13, 2020
Eros Resources Corp. Announces Closing of a Highly Successful, Fully Subscribed Rights Offering August 12, 2020

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