- Mineral Resources
- Online Spatial Data
- Global assessment of undiscovred copper resources
A linear belt of Jurassic and Cretaceous post subduction intrusive rocks in central China
| Tract ID |
142pCu8705 |
| Country |
China |
| Commodity |
Cu |
| Study area name |
East Asia Mesozoic |
| Tectonic setting |
postconvergence |
| Deposit type |
porphyry copper |
| Grade-tonnage model |
Porphyry copper, Cu-Mo subtype (Singer and others, 2008) |
| Geologic age |
| Geologic feature age |
Jurassic and Cretaceous (Yanshanian) |
| Generalized age |
Mesozoic |
| Oldest rocks age |
199.6Ma
|
| Youngest rocks age |
65.5Ma
|
| Age range |
134.1Ma
|
|
| Identified Cu resources |
390,000metric tons
|
| Known prospects |
6 |
| Mean Cu (t/sq km) |
304t/sq km
|
| Map scales used |
500K, 1M, 1.5M, 2.5M |
Results of the assessment
| Assessment date |
2010 |
| Estimators |
Jane M. Hammarstrom, Steve Ludington, Gilpin R. Robinson Jr. |
| Assessment depth |
1km
|
| Quantitative assessment |
Yes |
Estimated number of deposits
| Number of deposits |
Confidence level |
| 1 |
90% |
| 3 |
50% |
| 12 |
10% |
| 12 |
5% |
| 12 |
1% |
|
| Mean estimated deposits |
5.03 |
±4.15 |
(0.83%) |
| Probability of mean |
0.31 |
| Probability of no copper |
0.07 |
Estimated deposit density
Known
deposits |
Total
deposits |
Area
(sq km) |
Deposit density
per 100,000 sq km |
| 1 |
6.03 |
171,104 |
4 |
Mean estimated tonnage
| Copper |
52,000,000 |
| Molybdenum |
2,400,000 |
| Gold |
130 |
| Silver |
22,000 |
| Ore |
9,300 |
Undiscovered copper resource
| Confidence level |
90% |
50% |
10% |
5% |
| Tonnage |
410,000 |
19,000,000 |
150,000,000 |
200,000,000 |
Economic analysis
| Fraser country |
China |
| Fraser type |
0.52%
|
| Fraser high |
0.48%
|
| Typical cost |
0.52%
|
| High cost |
0.48%
|
| Infrastructure setting |
Mixed |
| Comments on depth |
default |
| Expected depth distribution |
|---|
| 0 - 250m |
0.25 |
| 250m - 500m |
0.25 |
| 500m - 1km |
0.5 |
| Economically recoverable resources |
|---|
| Copper |
38,000,000t
|
| Molybdenum |
1,100,000t
|
| Gold |
76t
|
| Silver |
14,000t
|
| Probability no econ recoverable |
0.07 |
| Econ NPV |
8,300x $1M
|
| Exp dollars |
44.66x $1M/100,000 sq km
|
| Exp value class |
High |
Bibliographic references
| General |
Ludington, Mihalasky, and others (2012) |
| Economic |
Robinson and Menzie (2012) |
Ludington, Steve, Mihalasky, M.J., Hammarstrom, J.M., Robinson, G.R., Jr., Frost, T.P., Gans, K.D., Light, T.D., Miller, R.J., and Alexeiev, Dmitriy, 2012, Porphyry copper assessment of the Mesozoic of East AsiaChina, Viet Nam, North Korea, Mongolia, andRussia: U.S. Geological Survey Scientific Investigations Report 20105090G, 53 p., http://pubs.usgs.gov/sir/2010/5090/g/.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/.
Deposits and prospects associated with this tract
| Name |
Type |
State |
Country |
Development |
Details |
| Jinduicheng |
deposit |
Shaanxi |
China |
Producer |
Details |
| Yemaquan |
prospect |
Qinghai |
China |
Prospect |
Details |
| Wenquan |
prospect |
Gansu |
China |
Prospect |
Details |
| Taiyangshan |
prospect |
Gansu |
China |
Prospect |
Details |
| Deemi |
prospect |
Qinghai |
China |
Prospect |
Details |
| Dan Feng |
prospect |
Shaanxi |
China |
Prospect |
Details |
| Qiushuwan |
prospect |
Henan |
China |
Prospect |
Details |
| Jiangligou |
prospect |
Shanxi |
China |
Prospect |
Details |
| Luocun |
prospect |
Henan |
China |
Prospect |
Details |
