Macquarie

Macquarie Arc, an accreted island-arc of Ordovician to Early Silurian age in the Lachlan Orogen
Tract ID 009pCu8002
Country Australia
Commodity Cu
Study area name Australia
Tectonic setting island arc
Deposit type porphyry copper
Grade-tonnage model Porphyry copper, Cu-Au subtype (Singer and others, 2008)
Geologic age
Geologic feature age Ordovician through Early Silurian
Generalized age Paleozoic
Oldest rocks age 488.3Ma
Youngest rocks age 428.2Ma
Age range 60.1Ma
Identified Cu resources 13,000,000metric tons
Known prospects 18
Mean Cu (t/sq km) 506t/sq km
Map scales used 1M

Results of the assessment

Assessment date 2010
Estimators Bookstrom, Arthur A.(USGS); Glen, Richard A. (GSNSW); Hammarstrom, Jane M.(USGS); Robinson, Gilpin R. (USGS); Zientek, Michael L. (USGS)
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
2 90%
7 50%
12 10%
12 5%
12 1%
Mean estimated deposits 6.87 ±3.54 (0.52%)
Probability of mean 0.34
Probability of no copper 0.04

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
9 15.87 41,463 38

Mean estimated tonnage

Copper 21,000,000
Molybdenum 120,000
Gold 1,500
Silver 6,900
Ore 4,300

Undiscovered copper resource

Confidence level 95% 90% 50% 10% 5%
Tonnage 350,000 1,500,000 13,000,000 52,000,000 72,000,000

Economic analysis

Fraser country Australia
Fraser type 0.71%
Fraser high 0.29%
Typical cost 1%
High cost 0%
Infrastructure setting Typical
Comments on depth skew deep
Expected depth distribution
0 - 250m 0.1
250m - 500m 0.3
500m - 1km 0.6
Economically recoverable resources
Copper 14,000,000t
Molybdenum 60,000t
Gold 740t
Silver 4,000t
Probability no econ recoverable 0.52
Econ NPV 4,000x $1M
Exp dollars 73.85x $1M/100,000 sq km
Exp value class High

Bibliographic references

General Bookstrom and others (2014)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Allendale prospect New South Wales Australia Occurrence Details
Bodangora prospect New South Wales Australia Prospect Details
Bowen Park prospect New South Wales Australia Prospect Details
Carangera prospect New South Wales Australia Prospect Details
Cargo deposit New South Wales Australia Prospect Details
Copper Hill deposit New South Wales Australia Past Producer Details
Dairy Hill prospect New South Wales Australia Prospect Details
Endeavour E-39 prospect New South Wales Australia Prospect Details
Endeavour E-43 prospect New South Wales Australia Prospect Details
Eurowie prospect New South Wales Australia Prospect Details
Ferndale prospect New South Wales Australia Prospect Details
Gemini prospect New South Wales Australia Prospect Details
Gooleys prospect New South Wales Australia Prospect Details
Hopetoun prospect New South Wales Australia Occurrence Details
Kingswood prospect New South Wales Australia Prospect Details
Marsden deposit New South Wales Australia Prospect Details
Moorilda prospect New South Wales Australia Prospect Details
Racecourse deposit New South Wales Australia Prospect Details
Cadia Hill open pit deposit New South Wales Australia Prospect Details
Big Cadia deposit New South Wales Australia Prospect Details
Cadia East open pit deposit New South Wales Australia Producer Details
Cadia East underground deposit New South Wales Australia Producer Details
Cadia Far East deposit New South Wales Australia Prospect Details
Cadia Quarry deposit New South Wales Australia Prospect Details
Little Cadia prospect New South Wales Australia Prospect Details
Ridgeway deposit New South Wales Australia Producer Details
Brazen prospect New South Wales Australia Prospect Details
Endeavour E-22 deposit New South Wales Australia Producer Details
Endeavour E-26 deposit New South Wales Australia Producer Details
Endeavour E-27 deposit New South Wales Australia Producer Details
Endeavour E-28 deposit New South Wales Australia Producer Details
Endeavour E-31N deposit New South Wales Australia Producer Details
Endeavour E-37 deposit New South Wales Australia Producer Details
Endeavour E-48 deposit New South Wales Australia Producer Details
GRP314 prospect New South Wales Australia Prospect Details
Veedas prospect New South Wales Australia Prospect Details
Chicane prospect New South Wales Australia Prospect Details
Cullingarai deposit New South Wales Australia Prospect Details
Estoril deposit New South Wales Australia Prospect Details
Homer prospect New South Wales Australia Prospect Details
Mandamah deposit New South Wales Australia Prospect Details
Monza prospect New South Wales Australia Prospect Details
Kangaroo Hill prospect New South Wales Australia Prospect Details
Yiddah deposit New South Wales Australia Prospect Details
Dam deposit New South Wales Australia Prospect Details
Greens Creek prospect New South Wales Australia Prospect Details
Mag H1 prospect New South Wales Australia Prospect Details
Rosevale prospect New South Wales Australia Prospect Details
Woolshed prospect New South Wales Australia Prospect Details
Cadia Group Group New South Wales Australia Producer Details
Northparkes Group Group New South Wales Australia Producer Details
Temora Central Group Group New South Wales Australia Prospect Details
Temora South Group Group New South Wales Australia Prospect Details