Eastern Medial New Guinea Magmatic Belt, Sub-tract a

Late Miocene to Pliocene-Pleistocene Medial New Guinea Magmatic Belt
Tract ID 009pCu7203a
Country Papua New Guinea
Commodity Cu
Study area name Southeast Asia and Melanesia
Tectonic setting postconvergence
Deposit type porphyry copper
Grade-tonnage model Porphyry copper, Cu-Au subtype (Singer and others, 2008)
Geologic age
Geologic feature age late Miocene through Pleistocene
Generalized age Tertiary-Neogene
Oldest rocks age 11.6Ma
Youngest rocks age 9Ma
Age range 2.6Ma
Identified Cu resources 6,100,000metric tons
Known prospects 1
Mean Cu (t/sq km) 358t/sq km
Map scales used 250K, 1M, 2M

Results of the assessment

Assessment date 2010
Estimators Gilpin R. Robinson, Jr., Steve Ludington, Jane M. Hammarstrom, Michael L. Zientek, Arthur A. Bookstrom, Alexander Yan Sze Wah, Bambang Setiabudi, Dwi Sunuhadai
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 50%
4 10%
4 5%
4 1%
Mean estimated deposits 1.6 ±1.54 (0.97%)
Probability of mean 0.23
Probability of no copper 0.29

Estimated deposit density

(sq km)
Deposit density
per 100,000 sq km
3 4.6 14,229 32

Mean estimated tonnage

Copper 5,100,000
Molybdenum 29,000
Gold 360
Silver 1,700
Ore 1,000

Undiscovered copper resource

Confidence level 50% 10% 5%
Tonnage 1,200,000 12,000,000 24,000,000

Economic analysis

Fraser country Papua New Guinea
Fraser type 0.08%
Fraser high 0.92%
Typical cost 0%
High cost 1%
Infrastructure setting High cost
Comments on depth default
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 2,500,000t
Molybdenum 10,000t
Gold 120t
Silver 810t
Probability no econ recoverable 0.85
Econ NPV 460x $1M
Exp dollars 1.96x $1M/100,000 sq km
Exp value class Very Low

Bibliographic references

General Hammarstrom and others (2013)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Star Mount Futik deposit Western Papua New Guinea Prospect Details
Ok Tedi deposit Western Papua New Guinea Producer Details
Star Mount Nong River deposit Western Papua New Guinea Prospect Details