- Mineral Resources
- Online Spatial Data
- Global assessment of undiscovred copper resources
Late Paleozoic Central Balkhash-Ili magmatic arc
Late Carboniferous to Permian magmatic-arc rocks
| Tract ID |
142pCu8004 |
| Country |
Kazakhstan |
| Commodity |
Cu |
| Study area name |
West Central Asia |
| Tectonic setting |
continental margin |
| 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
|
|
| Mean Cu (t/sq km) |
77t/sq km
|
| Map scales used |
200K, 1.5M |
Results of the assessment
| Assessment date |
2010 |
| Estimators |
Byron R. Berger, Lawrence J. Drew, Jane M. Hammarstrom, John C. Mars, Michael L. Zientek |
| Assessment depth |
1km
|
| Quantitative assessment |
Yes |
Estimated number of deposits
| Number of deposits |
Confidence level |
|
| 2 |
50% |
| 4 |
10% |
| 5 |
5% |
| 5 |
1% |
|
| Mean estimated deposits |
2.08 |
±1.65 |
(0.79%) |
| Probability of mean |
0.26 |
| Probability of no copper |
0.21 |
Estimated deposit density
Known
deposits |
Total
deposits |
Area
(sq km) |
Deposit density
per 100,000 sq km |
|
2.08 |
100,820 |
2 |
Mean estimated tonnage
| Copper |
7,800,000 |
| Molybdenum |
210,000 |
| Gold |
200 |
| Silver |
2,500 |
| Ore |
1,600 |
Undiscovered copper resource
| Confidence level |
50% |
10% |
5% |
| Tonnage |
2,800,000 |
18,000,000 |
31,000,000 |
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 |
most of tract covered; locally I~V |
| Expected depth distribution |
|---|
| 0 - 250m |
0.1 |
| 250m - 500m |
0.3 |
| 500m - 1km |
0.6 |
| Economically recoverable resources |
|---|
| Copper |
3,500,000t
|
| Molybdenum |
76,000t
|
| Gold |
59t
|
| Silver |
1,100t
|
| Probability no econ recoverable |
0.85 |
| Econ NPV |
600x $1M
|
| Exp dollars |
0.84x $1M/100,000 sq km
|
| Exp value class |
Very Low |
Bibliographic references
| General |
Berger and others (2014) |
| Economic |
Robinson and Menzie (2012) |
Berger, B.R., Mars, J.C., Denning, P.D., Phillips, J.D., Hammarstrom, J.M., Zientek, M.L, Dicken, C.L., and Drew, L.J., with contributions from Alexeiev, D., Seltmann, R., and Herrington, R.J., 2014, Porphyry copper assessment of western Central Asia: U.S. Geological Survey Scientific Investigations Report 20105090N, 219 p., 8 plates, and spatial data, http://dx.doi.org/10.3133/sir20105090N.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 20105090H, 21 p., http://pubs.usgs.gov/sir/2010/5090/h/.
