Insular Mixed Island- and Continental Arc

Calc-alkalic igneous rocks of accreted Jurassic island-arc terranes
Tract ID 003pCu2003
Country Canada
Commodity Cu
Study area name British Columbia and Yukon Territory
Tectonic setting mixed
Deposit type porphyry copper
Grade-tonnage model Canadian Cordillera Porphyry Cu±Mo±Au (Frost and others, 2011)
Geologic age
Geologic feature age Late Triassic through Cretaceous
Generalized age Mesozoic
Oldest rocks age 228.7Ma
Youngest rocks age 65.5Ma
Age range 163.2Ma
Identified Cu resources 3,200,000metric tons
Known prospects 3
Mean Cu (t/sq km) 51t/sq km
Map scales used 250K, 1M, 2M

Results of the assessment

Assessment date 2009
Estimators Abbott, Grant (YGS); Bookstrom, Arthur A.(USGS); Frost, Thomas P. (USGS); Logan, James (BCGS); Ludington, Steve (USGS); Mihalasky, Mark, J. (USGS); Panteleyev, Andre (XDM Geological Consultants)
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 90%
2 50%
4 10%
5 5%
6 1%
Mean estimated deposits 2.34 ±1.53 (0.66%)
Probability of mean 0.35
Probability of no copper 0.07

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
2 4.34 58,361 7

Mean estimated tonnage

Copper 3,000,000
Molybdenum 130,000
Gold 160
Silver 1,100
Ore 1,100

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 200,000 1,900,000 7,200,000 9,800,000

Economic analysis

Fraser country Canada (BC*)
Fraser type 0.61%
Fraser high 0.38%
Typical cost 0.79%
High cost 0.21%
Infrastructure setting Mixed
Comments on depth default
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 870,000t
Molybdenum 26,000t
Gold 19t
Silver 240t
Probability no econ recoverable 0.8
Econ NPV 130x $1M
Exp dollars -4.95x $1M/100,000 sq km
Exp value class Very Low

Bibliographic references

General Mihalasky and others (2011, revised 2013)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Hushamu deposit British Columbia Canada Prospect Details
Island Copper deposit British Columbia Canada Past Producer Details
Red Dog deposit British Columbia Canada Prospect Details
Bay 21 prospect British Columbia Canada Occurrence Details
Bay 29 prospect British Columbia Canada Occurrence Details
Bay 56 prospect British Columbia Canada Occurrence Details
Camp Lake prospect British Columbia Canada Prospect Details
HEP prospect British Columbia Canada Prospect Details
Lois prospect British Columbia Canada Occurrence Details
Road prospect British Columbia Canada Occurrence Details
Rupert prospect British Columbia Canada Occurrence Details
Tex prospect British Columbia Canada Occurrence Details
Yankee Girl prospect British Columbia Canada Occurrence Details
Hushamu Group Group British Columbia Canada Prospect Details
Island Group Group British Columbia Canada Past Producer Details