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Eastern Medial New Guinea Magmatic Belt, Sub-tract b

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Late Miocene to Pliocene-Pleistocene Medial New Guinea Magmatic Belt
Tract ID 009pCu7203b
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 11,400,000metric tons
Known prospects 9
Mean Cu (t/sq km) 376t/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 90%
4 50%
16 10%
16 5%
16 1%
Mean estimated deposits 6.63 ±5.58 (0.84%)
Probability of mean 0.34
Probability of no copper 0.07

Estimated deposit density

Known
deposits		 Total
deposits		 Area
(sq km)		 Deposit density
per 100,000 sq km
3 9.63 53,222 18

Mean estimated tonnage

Copper 20,000,000
Molybdenum 120,000
Gold 1,500
Silver 6,700
Ore 4,100

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 390,000 10,000,000 55,000,000 76,000,000

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 skew deep
Expected depth distribution
0 - 250m 0.1
250m - 500m 0.3
500m - 1km 0.6
Economically recoverable resources
Copper 8,700,000t
Molybdenum 39,000t
Gold 430t
Silver 3,000t
Probability no econ recoverable 0.54
Econ NPV 1,600x $1M
Exp dollars 13.17x $1M/100,000 sq km
Exp value class Low

Bibliographic references

General Hammarstrom and others (2013)
Economic Robinson and Menzie (2012)
Hammarstrom, J.M., Bookstrom, A.A., Dicken, C.L., Drenth, B.J., Ludington, S., Robinson, G.R., Jr., Setiabudi, B.T., Sukserm, W., Sunuhadi, D.N., Wah, A.Y.S., and Zientek, M.L., with contributions from Cox, D.P., Jarnyaharn, P., Kopi, G., Ngoc, N.T.M., Otarawanna, P., Pei, C.S., Phany, U., Van Quy, Sakimoto, T., Saroa, D., Soares da Costa, N., Sotham, S., Sim, I.M., Trung, N.N., Wongsomasak, S., Yokarti, B., and Zaw, K., 2013, Porphyry copper assessment of Southeast Asia and Melanesia: U.S. Geological Survey Scientific Investigations Report 2010–5090–D, 332 p., http://pubs.usgs.gov/sir/2010/5090/d/.Robinson, G.R., Jr., and Menzie, W.D., 2012, Economic filters for evaluating porphyry copper deposit resource assessments using grade-tonnage deposit models, with examples from the U.S. Geological Survey global mineral resource assessment (ver 1.2, March 2014): U.S. Geological Survey Scientific Investigations Report 2010–5090–H, 21 p., http://pubs.usgs.gov/sir/2010/5090/h/.

Deposits and prospects associated with this tract

Name Type State Country Development Details
Elo prospect Central Papua New Guinea Prospect Details
Gusap prospect Madang Papua New Guinea Occurrence Details
Ipi River prospect Central Papua New Guinea Prospect Details
Mount Hagen prospect Western Highlands Papua New Guinea Prospect Details
Oram prospect Central Papua New Guinea Prospect Details
Zenag gold-copper project prospect Morobe Papua New Guinea Prospect Details
Tifalmin prospect Western Papua New Guinea Prospect Details
Wamum prospect Morobe Papua New Guinea Prospect Details
Wafi-Golpu deposit Morobe Papua New Guinea Prospect Details
Kodu deposit Central Papua New Guinea Prospect Details
Yandera deposit Madang Papua New Guinea Prospect Details
Wafi-Golpu Group Group Morobe Papua New Guinea Prospect Details