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United States
Florence Project

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 Location:
74 km SE from Phoenix, Arizona, United States

  Project Contacts:
1575 West Hunt Highway
Florence
Arizona, United States
85132
Phone  ...  Subscription required
Fax(520)-374-3999
EmailEmail
WebsiteWeb
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  • Overview
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  • Mining
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  • Reserves
  • Costs & Financials
  • Personnel
  • Filings & News

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Overview

StagePermitting
Mine TypeIn-Situ
Commodities
  • Copper
Mining Method
  • Solution mining
Mine Life21 years (as of Jan 1, 2021)
Oct. 5, 2021- The U.S. Environmental Protection Agency ("EPA") has advised Taseko that it intends to send a draft Underground Injection Control ("UIC") permit to the Company in mid-October and provide the Company with a two-week review period before the draft permit is formally issued, commencing the public comment period.

The UIC permit is the final permitting step required prior to construction of Florence Copper, and the EPA continues to make progress towards finalizing the permit with no significant issues raised to-date. Receipt of the draft permit will represent another significant step towards Florence Copper being fully permitted and ready for construction.

Development of the project is being performed in two phases – the first phase is a production test facility, which is followed by the second phase commercial facility.
Latest NewsTaseko Mines Receives Commitment For Additional Financing For Florence Copper     January 13, 2023


Owners

Source: p. 13
CompanyInterestOwnership
Taseko Mines Ltd. 100 % Indirect
Taseko owns 100% of Curis Holdings (Canada) Ltd., which owns 100% of Florence Holdings Inc., which owns 100% of Florence Copper Inc.

Contractors

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Deposit Type

  • Porphyry


Summary:

The mineral deposit type at the Florence Copper site is an extensive, Laramide type of porphyry copper deposit consisting of a large core of copper sulfide mineralization underlying a zone of copper oxide mineralization. The central portion of the deposit is overlain by approximately 400 feet of flat-lying conglomerate and alluvial material that contains a fine-grained silt and clay interbed. The oxide and sulfide zones are separated from one another by a transition zone ranging on average from 0 to 55 feet in thickness. The depth and grade of the sulfide zone renders it currently uneconomic to mine by conventional mining methods. The impermeability and mineralization of the sulfide zone renders it uneconomic for ISCR methods.

Approximately 71% of the oxide mineralization is hosted by a Precambrian quartz monzonite and 26% by Tertiary granodiorite porphyry. The remaining igneous rocks associated with the deposit are Precambrian diabase and Tertiary andesite, latite, dacite, basalt, and aplite. The deposit occurs in a structural horst block, which is bounded on the east and west by grabens and is controlled by normal faults trending north to northwest.

The deposit type is a typical southwestern U.S. porphyry copper deposit. The United States Geological Survey classification of the porphyry copper mineralization at the Florence deposit is model 21a (porphyry Cu-Mo). This model type is described as stockwork veinlets of quartz, chalcopyrite, and molybdenite ........


Mining Methods

  • Solution mining


Summary:

Florence Copper is located in a serviced area within the town of Florence, Arizona. The site has, or has access in close proximity, to the supporting infrastructure required for the planned ISCR operations including road access, rail access, power, water and natural gas.

The mining method proposed for the Florence Copper Project (FCP) is the in-situ copper recovery (ISCR) method.

In-situ recovery extracts the target element or mineral in a deposit by passing a process solution containing a lixiviant through the mineral deposit, and consequently does not require many of the activities typically associated with mining.

The ISCR process selected for the FCP involves the installation of injection and recovery wells to pass a weak sulfuric acid solution, called raffinate, through targeted portions of the mineral deposit. The raffinate passes through natural fractures and voids in the deposit and dissolves the copper mineralization. The copper laden solution, known as pregnant leach solution (“PLS”), is collected in recovery wells where it is pumped to the surface for processing by solvent extraction and electrowinning (“SX/EW”). The SX/EW plant selectively removes copper from the PLS producing raffinate solution to be recirculated to the well field and copper cathode product.

Sweep efficiency is a term used to define the percentage of the mineralized material body contacted by injected solutions within a given injection and recovery ........


Crushing and Grinding


Processing

Flow Sheet: Subscription required

Summary:

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Projected Production:

CommodityUnitsAvg. AnnualLOM
Copper M lbs 851,700
All production numbers are expressed as cathode.


Reserves at December 31, 2020:
Reserve Estimate at 0.05% TCu Cut-off.

CategoryTonnage CommodityGradeContained Metal
Probable 345 M tons Copper 0.36 % 2,472 M lbs
Measured & Indicated 429 M tons Copper 0.33 % 2,838 M lbs
Inferred 63 M tons Copper 0.24 % 295 M lbs

Commodity Production Costs:

CommodityUnitsAverage
Site cash costs (produced) Copper USD 0.84 / lb *  
Cash costs Copper USD 0.9 / lb *  
Total cash costs Copper USD 1.1 / lb *  
Assumed price Copper USD 2.5 / lb *  
* According to 2017 study / presentation.

2017 Study Costs and Valuation Metrics :

MetricsUnitsLOM Total
Initial CapEx $M USD  ......  Subscription required
Sustaining CapEx $M USD  ......  Subscription required
Closure costs $M USD  ......  Subscription required
Total OpEx $M USD  ......  Subscription required
Mining Taxes $M USD  ......  Subscription required
Income Taxes $M USD  ......  Subscription required
Gross revenue (LOM) $M USD  ......  Subscription required
Pre-tax Cash Flow (LOM) $M USD  ......  Subscription required
Pre-tax NPV @ 7.5% $M USD  ......  Subscription required
After-tax NPV @ 7.5% $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:

Mine Management:

Job TitleNameEmailProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
....................... Subscription required ....................... Subscription required Subscription required Nov 14, 2022
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Staff:

Total WorkforceYear
Subscription required 2017

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
Technical Report 2017
Corporate Presentation 2015
Pre-Feasibility Study Report 2013
Subscription required - Subscription is required.

News:

NewsDate
Taseko Mines Receives Commitment For Additional Financing For Florence Copper January 13, 2023
Taseko And Mitsui Enter Strategic Partnership To Develop Florence Copper December 20, 2022

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