Intermontane Island-Arc

Porphyry Cu systems associated with pre-accretionary Triassic and Jurassic calc-alkalic island arcs that formed offshore of western North America
Tract ID 003pCu2001x
Country Canada-United States of America
Commodity Cu
Study area name British Columbia and Yukon Territory and United States
Tectonic setting island arc
Deposit type porphyry copper
Grade-tonnage model Canadian Cordillera Porphyry Cu±Mo±Au (Frost and others, 2011)
Geologic age
Geologic feature age Triassic through Jurassic
Generalized age Mesozoic
Oldest rocks age 251Ma
Youngest rocks age 145.5Ma
Age range 105.5Ma
Identified Cu resources 25,000,000metric tons
Known prospects 20
Mean Cu (t/sq km) 51t/sq km
Map scales used 500K

Results of the assessment

Assessment date 2013
Estimators Steve Ludington, Jane Hammarstrom, Gilpin Robinson, and 1996 Team
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
3 90%
5 50%
15 10%
15 5%
15 1%
Mean estimated deposits 7.2 ±4.63 (0.64%)
Probability of mean 0.4
Probability of no copper 0.04

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
12 19.2 181,200 11

Mean estimated tonnage

Copper 9,300,000
Molybdenum 380,000
Gold 500
Silver 3,100
Ore 3,500

Undiscovered copper resource

Confidence level 95% 90% 50% 10% 5%
Tonnage 440,000 1,400,000 7,300,000 20,000,000 25,000,000

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 2,700,000t
Molybdenum 76,000t
Gold 60t
Silver 670t
Probability no econ recoverable 0.49
Econ NPV 400x $1M
Exp dollars -2.15x $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
Bethlehem deposit British Columbia Canada Past Producer Details
Ann deposit British Columbia Canada Prospect Details
Brenda deposit British Columbia Canada Past Producer Details
Bronson Slope - Red Bluff deposit British Columbia Canada Prospect Details
Getty South deposit British Columbia Canada Prospect Details
Gibraltar deposit British Columbia Canada Producer Details
Gnat Lake deposit British Columbia Canada Prospect Details
Goat deposit British Columbia Canada Prospect Details
Highland Valley Copper deposit British Columbia Canada Past Producer Details
Highmont deposit British Columbia Canada Past Producer Details
IDE-AM deposit British Columbia Canada Prospect Details
JA deposit British Columbia Canada Prospect Details
Kemess North deposit British Columbia Canada Prospect Details
Kemess South deposit British Columbia Canada Producer Details
Kinaskan deposit British Columbia Canada Prospect Details
Krain deposit British Columbia Canada Prospect Details
Kwanika Central deposit British Columbia Canada Prospect Details
Kwanika South deposit British Columbia Canada Prospect Details
Lornex deposit British Columbia Canada Past Producer Details
NABS deposit British Columbia Canada Prospect Details
Pine deposit British Columbia Canada Prospect Details
Sawmill deposit British Columbia Canada Prospect Details
Schaft Creek deposit British Columbia Canada Prospect Details
Bear prospect British Columbia Canada Occurrence Details
Bud - South zone prospect British Columbia Canada Occurrence Details
BX prospect British Columbia Canada Occurrence Details
Clapper prospect British Columbia Canada Occurrence Details
Copper Ace South prospect British Columbia Canada Prospect Details
Dot prospect British Columbia Canada Past Producer Details
Eaglehead deposit British Columbia Canada Prospect Details
Getty West prospect British Columbia Canada Occurrence Details
Go prospect British Columbia Canada Occurrence Details
Gunn prospect British Columbia Canada Prospect Details
HED deposit British Columbia Canada Prospect Details
Highmont West prospect British Columbia Canada Prospect Details
Jericho prospect British Columbia Canada Prospect Details
King Edward prospect British Columbia Canada Prospect Details
MER prospect British Columbia Canada Prospect Details
MEX prospect British Columbia Canada Occurrence Details
Mineral Hill prospect British Columbia Canada Occurrence Details
Pil prospect British Columbia Canada Occurrence Details
Prince prospect British Columbia Canada Occurrence Details
QC prospect British Columbia Canada Occurrence Details
Rateria prospect British Columbia Canada Prospect Details
Red prospect British Columbia Canada Occurrence Details
Sofia prospect British Columbia Canada Occurrence Details
Turlight prospect British Columbia Canada Past Producer Details
TUV prospect Yukon Territory Canada Prospect Details
Victor prospect British Columbia Canada Past Producer Details
Wiz prospect British Columbia Canada Past Producer Details
Wolf prospect British Columbia Canada Occurrence Details
Woodjam prospect British Columbia Canada Prospect Details
Yubet prospect British Columbia Canada Prospect Details
AL prospect British Columbia Canada Occurrence Details
Bud - North zone prospect British Columbia Canada Occurrence Details
Kid prospect British Columbia Canada Occurrence Details