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United States
Centennial Project

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 Location:
109 km N from Denver, Colorado, United States

  Project Contacts:
101 N. Shoreline Blvd, Suite 450 Corpus Christi
Corpus Christi
Texas, United States
78401
Phone  ...  Subscription required
EmailEmail
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Overview

StagePreliminary Economic Assessment
Mine TypeIn-Situ
Commodities
  • Uranium
  • U3O8
Mining Method
  • Solution mining
Mine Life14 years (as of Jan 1, 2010)


Owners

Source:
CompanyInterestOwnership
enCore Energy Corp. 100 % Indirect
January 4, 2022 - enCore Energy Corp. and Azarga Uranium Corp. are pleased to announce the closing of the previously announced plan of arrangement whereby enCore has acquired all of the outstanding shares of Azarga Uranium.

Contractors

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Deposit Type

  • Sandstone hosted


Summary:

Uranium deposits in the Centennial Project are sandstone, roll front type typical of those in Wyoming, South Dakota and Texas. These type deposits are usually “C” shaped in cross section, a few tens of feet-to-100 or more-feet wide and often thousands of feet long. Uranium minerals are usually deposited at the interface of oxidizing solutions and reducing solutions or redox boundaries. Typical alteration associated with this redox boundary consists of limonitic and hematitic staining of the sandstones.

As the uranium minerals precipitate, they coat sand grains and fill the interstices between grains. As long as oxidizing groundwater movement is constant, minerals will be solubilized in the interior portion of the “C” shape, and precipitated in the exterior portion of the “C” shape, increasing the tenor of the ore body by multiple migration and accretion. The thickness of the ore body is generally a factor of the thickness of the sandstone host unit. Mineralization may be 10 to 15ft thick within the roll front while being inches to feet thick in the tail portions.

Ore mineralogy consists of uraninite, pitchblende, coffinite, and carnotite, with associated vanadium in some deposits. Typical alteration in the roll-front sandstone deposit includes oxidation of iron minerals up-dip from the front and reduction of iron minerals down-dip along advancing redox interface boundaries.


Mining Methods

  • Solution mining


Summary:

The Centennial mineralization is located at depths of 100 to 500 feet below surface, as primarily three separate mineralized horizons, which are sinuous and narrow but extend for several miles along trend. The deposits are planned for ISR mining by development of individual well fields for each mineralized horizon. A well field will be developed as a series of injection and recovery wells, with a pattern to fit the mineralized horizon, typically a five-spot well pattern on 70 to 100 foot (ft) drillhole spacing depending on local hydrogeologic character.

The Centennial Project has two sections, the Northern project area and the Southern project area, both of which will be developed for ISR mining. The Northern deposits are located below the water table in the host formations with conditions favorable for ISR methods. Much of the mineralization in the Southern project area lies at or just above the water table, which will require a localized enhancement of the water table with a well field encircling freshwater injection fence to facilitate ISR mining methods.


Crushing and Grinding


Processing

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Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Uranium k lbs 7009,523
All production numbers are expressed as U3O8.


Reserves at June 2, 2010:
Project resources are reported for a 0.20 GT cut-off.

CategoryTonnage CommodityGradeContained Metal
Indicated 6,873,199 tons U3O8 0.09 % 10,371,571 lbs
Inferred 1,364,703 tons U3O8 0.09 % 2,325,514 lbs

Commodity Production Costs:

CommodityUnits
Cash costs U3O8 USD 35 / lb *  USD
Assumed price U3O8 USD 65 / lb *  USD
* According to 2010 study / presentation.
Subscription required - Subscription is required.

2010 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Total CapEx $M USD  ......  Subscription required
Processing OpEx $M USD 61.9
Total OpEx $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Net revenue (LOM) $M USD  ......  Subscription required
Operating margin (LOM) $M USD  ......  Subscription required
Net Income (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 8% $M USD  ......  Subscription required
Pre-tax IRR, %  ......  Subscription required
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Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jan 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Jan 23, 2023
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Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2020
Preliminary Economic Assessment 2010
Subscription required - Subscription is required.

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