Chatkal and Kurama Ranges

Late Carboniferous to Permian magmatic-arc and post-collisional volcanic-plutonic complexes
Tract ID 142pCu8001
Country Kazakhstan-Kyrgyzstan-Tajikistan-Uzbekistan
Commodity Cu
Study area name West Central Asia
Tectonic setting postconvergence
Deposit type porphyry copper
Grade-tonnage model General porphyry copper model (Singer and others, 2008)
Geologic age
Geologic feature age Late Carboniferous through Permian
Generalized age Paleozoic
Oldest rocks age 318.1Ma
Youngest rocks age 251Ma
Age range 67.1Ma
Identified Cu resources 31,000,000metric tons
Known prospects 2
Mean Cu (t/sq km) 757t/sq km
Map scales used 200K, 1.5M

Results of the assessment

Assessment date 2009
Estimators Byron R. Berger, Jane M. Hammarstrom, John C. Mars, Jeffrey D. Phillips, David M. Sutphin, Michael L. Zientek
Assessment depth 1km
Quantitative assessment Yes

Estimated number of deposits

Number of deposits Confidence level
1 90%
5 50%
10 10%
10 5%
10 1%
Mean estimated deposits 5.23 ±3.21 (0.61%)
Probability of mean 0.3
Probability of no copper 0.07

Estimated deposit density

(sq km)
Deposit density
per 100,000 sq km
4 9.23 25,100 37

Mean estimated tonnage

Copper 19,000,000
Molybdenum 520,000
Gold 490
Silver 6,400
Ore 3,900

Undiscovered copper resource

Confidence level 90% 50% 10% 5%
Tonnage 460,000 10,000,000 45,000,000 72,000,000

Economic analysis

Fraser country Kazakhstan
Fraser type 0.22%
Fraser high 0.79%
Typical cost 0%
High cost 1%
Infrastructure setting High cost
Comments on depth I=V; depth of erosion not a concern
Expected depth distribution
0 - 250m 0.25
250m - 500m 0.25
500m - 1km 0.5
Economically recoverable resources
Copper 9,300,000t
Molybdenum 200,000t
Gold 170t
Silver 3,000t
Probability no econ recoverable 0.51
Econ NPV 1,700x $1M
Exp dollars 39.39x $1M/100,000 sq km
Exp value class Medium

Bibliographic references

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

Deposits and prospects associated with this tract

Name Type State Country Development Details
Kuru Tegerek deposit Jalal-Abad Kyrgyzstan Prospect Details
Kyzata deposit Toshkent Uzbekistan Prospect Details
Sarycheku deposit Toshkent Uzbekistan Prospect Details
Bozymchak prospect Jalal-Abad Kyrgyzstan Occurrence Details
Tekeli prospect Toshkent Uzbekistan Occurrence Details
Almalyk Group deposit Toshkent Uzbekistan Prospect Details