Esfahan

Late Paleocene to middle-late Eocene backarc of the Tethyan Metallogenic Belt.
Tract ID 142pCu9008
Country Iran-Iraq-Turkey
Commodity Cu
Study area name Tethys
Tectonic setting postconvergence
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2008)
Geologic age
Geologic feature age late Paleocene through middle Eocene
Generalized age Tertiary-Paleogene
Oldest rocks age 58.7Ma
Youngest rocks age 40.4Ma
Age range 18.3Ma
Identified Cu resources 640,000metric tons
Known prospects 13
Mean Cu (t/sq km) 264t/sq km
Map scales used 1M

Results of the assessment

Assessment date 2013
Estimators Arthur A. Bookstrom, Jane M. Hammarstrom, Steve Ludington, John C. Mars, Michael L. Zientek, Lukas Zurcher.
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
2 50%
8 10%
18 5%
18 1%
Mean estimated deposits 3.95 ±4.93 (1.25%)
Probability of mean 0.27
Probability of no copper 0.2

Estimated deposit density

Known
deposits
Total
deposits
Area
(sq km)
Deposit density
per 100,000 sq km
1 4.95 56,900 9

Mean estimated tonnage

Copper 15,000,000
Molybdenum 410,000
Gold 380
Silver 5,100
Ore 3,100

Undiscovered copper resource

Confidence level 50% 10% 5%
Tonnage 4,200,000 43,000,000 71,000,000

Economic analysis

Fraser country Iran, Iraq, Turkey*
Fraser type 0.7%
Fraser high 0.31%
Typical cost 1%
High cost 0%
Infrastructure setting Typical
Comments on depth default (mixed)
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 10,000,000t
Molybdenum 200,000t
Gold 200t
Silver 3,100t
Probability no econ recoverable 0.37
Econ NPV 2,800x $1M
Exp dollars 33.71x $1M/100,000 sq km
Exp value class Medium

Bibliographic references

General Zürcher and others (in press)
Economic Robinson and Menzie (2012)

Deposits and prospects associated with this tract

Name Type State Country Development Details
Anarag prospect Yazd Iran Past Producer Details
Chah Shureh prospect Esfahan Iran Occurrence Details
Chahpalang-South prospect Esfahan Iran Occurrence Details
Gorgab-4 prospect Esfahan Iran Unknown Details
Kale Kafi deposit Esfahan Iran Prospect Details
Khuni prospect Esfahan Iran Past Producer Details
Kuh-e-Gabri prospect Kerman Iran Prospect Details
Kuh-e-Rig prospect Kerman Iran Prospect Details
Maranjab prospect Esfahan Iran Unknown Details
Pyroozi prospect Esfahan Iran Unknown Details
Sarajieh prospect Esfahan Iran Unknown Details
Sholugh Abad prospect Esfahan Iran Unknown Details
Tallesiah prospect Esfahan Iran Occurrence Details
Zah prospect Esfahan Iran Unknown Details