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Woodjam, Canada

Copper and Gold Deposit in Canada

Mineral Resource of 0.6Moz gold and 1,705Mlb copper


The Woodjam project is approximately 370km northeast of Vancouver B.C. The project is centred over latitude 54°14’54”N, longitude 121°21’26”W and is about 1,000m above sea level. Well established roads and supporting infrastructure exists in the area allowing for year round work. Active Cu-Au mines in the area include Mount Polley and Gibraltar.

All project interests and rights are held by Gold Fields Horsefly Exploration Corp., a subsidiary of Gold Fields. The project has been inactive during 2014 as efforts to divest this non-core project are being made. No exploration occurred on the project in 2014 and none is planned for 2015. Consequently, the 2013 resource estimate has not been updated.

A comprehensive quality assurance and quality control (QA/QC) protocol is in place at all the Gold Fields operations and projects, using leading industry practice in data acquisition, reputable certified laboratories and analytical controls

Subproject Area Ownership Comments
Woodjam North 43,898ha 51% GF, 49% WCC GF has rights to earn up to a 70% interest
Woodjam South 14,258ha 51% GF, 49% WCC GF has rights to earn up to a 70% interest
Rand 1,500ha 51% GF, 49% TLR GF has rights to earn up to a 80% interest
Magalloy 650ha 0% WJP, 100% PV WJP has rights to acquire 100% interest, included in Woodjam North agreement
Megaton 651ha 0% WJP, 100% PV WJP has rights to acquire 100% interest, included in Woodjam South agreement
GF, Gold Fields.
WCC, Consolidated Woodjam Copper Corp., a public company.
TLR, Teslin River Resources Corp., a public company.
WJP, Woodjam Partners, collectively Gold Fields and Consolidated Woodjam Copper Corp.
PV, Private vendors, namely Herb Wahl, Jack Brown John and Jim Brown John.


The Woodjam project is located in the Quesnel Trough, a large depositional basin, which includes dominantly alkali and sub-alkali volcanic and sedimentary rocks and hosts many of the copper and gold porphyry deposits in British Columbia.

The project is underlain by a succession of Triassic to Jurassic Nicola volcanic and volcano-sedimentary rocks that are intruded by several early Jurassic small volume monzonite intrusions and the large Takomkane batholith. Quaternary basaltic volcanic and volcaniclastic rocks overlap these older units.

Porphyry deposits across the property are dominantly copper with lesser gold and molybedenite mineralisation. At the Southeast zone, the largest deposit, mineralisation is hosted entirely within lithologies of the Takomkane batholith. This is in contrast to mineralisation associated with the small volume monzonite intrusions (Megabuck, Deerhorn, Takom and Three Firs deposits), which are located within the intrusions and also developed in the surrounding volcanic and sedimentary host rocks.

Details of the project, including the most recent resource reports were filed in July 2013 by our partner, Consolidated Woodjam Copper Corp., and are available for download from SEDAR

Woodjam: Inferred Mineral Resources

  December 2014 Dec 2013  
Mineral Resource Tonnes (Mt)   Grade Metal   Metal  
Gold and Copper (Mt)   (g/t) (Moz)   (Moz)  
Inferred – Gold 41.1   0.44 0.584   0.584  
      Cu Cu   Cu  
      (%) (Mlb)   (Mlb)  
Inferred – Copper 262.8   0.29 1,705   1,705  
Woodjam resource table notes:
1. These Mineral Resources are reported in accordance with the South African Code for the Reporting of Exploration Results, Mineral Resources, and Mineral Reserves, 2007 Edition (SAMREC Code). Confidence classification assumes annual production-scale, bulk open-pit mining scenario evaluation.
2. The Mineral Resources have not been updated as no new exploration has been completed and the project is in the process of being divested.
3. These Mineral Resources are not Mineral Reserves and are reported without dilution and ore loss.
4. All tonnes (t) relate to metric units. Rounding-off of figures may result in minor computational discrepancies, where this happens it is not deemed significant. The last Mineral Resources were determined using a gold price of US$1,650/oz and a copper price of US$3.9/lb. However, the 2011 maiden resource for the Southeast Zone used metal prices of US$1,450/oz gold and US$3.90/lb copper.
5. The Mineral Resources are constrained within an optimised pit shell using scoping study level assumptions for mining, processing, and administration cost estimates; mining parameters; and process recoveries for copper and gold.
6. Attributable metal to Gold Fields is 51%.
7. Depending on the date of estimation the resource cut-off grades were US$7.50 to US$8.60/tonne based on NSR calculations. The NSR is calculated using scoping level recoveries, transport costs and smelter terms and the cut-off cost is the breakeven mining cost based on scoping level opex and sustaining capital estimates.
Dr Ross Sherlock
  (PGeo; APEGBC 23778) of Gold Fields Canada Exploration BV, who holds the position of Exploration Manager for North America is the principal Competent Person (CP) for this disclosure and this Report was completed under his supervision. Ross was onsite in a supervisory role, and was actively involved in the 2009, 2010, 2011, 2012 and 2013 exploration programme
Alex Trueman
  BSc (Hons) Geology; PGeo, APEGBC 149753;MAusIMM CP (Geo) 110730; Chief Resource Geologist and is responsible for Mineral Resource estimation and reporting.
Susan Poos
  P.E. 30975, SME Registered Member 2571200, prepared the mining constraints associated with the Resource declaration.