- Mineral Resources
- Online Spatial Data
- Global assessment of undiscovred copper resources
A curvilinear belt of post-subduction Eocene igneous rocks in southwest China
| Tract ID |
142pCu8710 |
| Country |
China |
| Commodity |
Cu |
| Study area name |
Tibetan Plateau |
| Tectonic setting |
postconvergence |
| Deposit type |
porphyry copper |
| Grade-tonnage model |
General porphyry copper model (Singer and others, 2008) |
| Geologic age |
| Geologic feature age |
Eocene |
| Generalized age |
Tertiary-Paleogene |
| Oldest rocks age |
55.8Ma
|
| Youngest rocks age |
33.9Ma
|
| Age range |
21.9Ma
|
|
| Identified Cu resources |
11,000,000metric tons
|
| Known prospects |
7 |
| Mean Cu (t/sq km) |
285t/sq km
|
| Map scales used |
500K, 1M |
Results of the assessment
| Assessment date |
2010 |
| Estimators |
Jane M. Hammarstrom, Steve Ludington, Gilpin R. Robinson Jr., Michael L. Zientek |
| Assessment depth |
1km
|
| Quantitative assessment |
Yes |
Estimated number of deposits
| Number of deposits |
Confidence level |
| 3 |
90% |
| 6 |
50% |
| 18 |
10% |
| 18 |
5% |
| 18 |
1% |
|
| Mean estimated deposits |
8.5 |
±5.67 |
(0.67%) |
| Probability of mean |
0.34 |
| Probability of no copper |
0.03 |
Estimated deposit density
Known
deposits |
Total
deposits |
Area
(sq km) |
Deposit density
per 100,000 sq km |
| 6 |
14.5 |
112,470 |
13 |
Mean estimated tonnage
| Copper |
32,000,000 |
| Molybdenum |
910,000 |
| Gold |
820 |
| Silver |
11,000 |
| Ore |
6,600 |
Undiscovered copper resource
| Confidence level |
95% |
90% |
50% |
10% |
5% |
| Tonnage |
830,000 |
2,700,000 |
20,000,000 |
76,000,000 |
110,000,000 |
Economic analysis
| Fraser country |
China (Vietnam proxy*) |
| Fraser type |
0.18%
|
| Fraser high |
0.82%
|
| Typical cost |
0%
|
| High cost |
1%
|
| Infrastructure setting |
High cost |
| Comments on depth |
default |
| Expected depth distribution |
|---|
| 0 - 250m |
0.25 |
| 250m - 500m |
0.25 |
| 500m - 1km |
0.5 |
| Economically recoverable resources |
|---|
| Copper |
16,000,000t
|
| Molybdenum |
350,000t
|
| Gold |
280t
|
| Silver |
5,200t
|
| Probability no econ recoverable |
0.32 |
| Econ NPV |
2,800x $1M
|
| Exp dollars |
18.79x $1M/100,000 sq km
|
| Exp value class |
Medium |
Bibliographic references
| General |
Ludington, Hammarstrom, and others (2012) |
| Economic |
Robinson and Menzie (2012) |
Ludington, Steve, Hammarstrom, J.M., Robinson, G.R., Jr., Mars, J.C., and Miller, R.J., 2012, Porphyry copper assessment of the Tibetan Plateau, China: U.S. Geological Survey, Scientific Investigations Report 20105090F, 63 p., http://pubs.usgs.gov/sir/2010/5090/f/.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 |
| Xiariduo |
prospect |
Xizang |
China |
Prospect |
Details |
| Hengxingcuo |
prospect |
Xizang |
China |
Prospect |
Details |
| Yulong |
deposit |
Xizang |
China |
Producer |
Details |
| Zhanaga |
deposit |
Xizang |
China |
Prospect |
Details |
| Mangzhong |
deposit |
Xizang |
China |
Prospect |
Details |
| Duoxiasongduo |
deposit |
Xizang |
China |
Prospect |
Details |
| Malasongduo |
deposit |
Xizang |
China |
Prospect |
Details |
| Gegongnong |
deposit |
Xizang |
China |
Prospect |
Details |
| Narigongma |
prospect |
Qinghai |
China |
Prospect |
Details |
| Ridanguo |
prospect |
Qinghai |
China |
Prospect |
Details |
| Jicuo |
prospect |
Xizang |
China |
Prospect |
Details |
| Seli |
prospect |
Xizang |
China |
Prospect |
Details |
| Mamupu |
prospect |
Xizang |
China |
Prospect |
Details |
| Lurige |
prospect |
Qinghai |
China |
Prospect |
Details |
